Home / 39,379,195,443.45-54,343,292,368.20-21,557,852,949.45

Finding the Fourth Proportional to 39,379,195,443.45, 54,343,292,368.20 and 21,557,852,949.45

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Solution

The fourth proportional to 39,379,195,443.45, 54,343,292,368.20 and 21,557,852,949.45 is: 29,749,838,524.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,379,195,443.45 : 54,343,292,368.20 = 21,557,852,949.45 : x
  2. Step 2: Convert to fraction form
    39,379,195,443.45/54,343,292,368.20 = 21,557,852,949.45/x
  3. Step 3: Cross multiply
    39,379,195,443.45x = 54,343,292,368.20 × 21,557,852,949.45
  4. Step 4: Simplify right side
    39,379,195,443.45x = 1,171,524,705,662,624,071,680
  5. Step 5: Solve for x
    x = 1,171,524,705,662,624,071,680/39,379,195,443.45
  6. Step 6: Final answer
    x = 29,749,838,524.38

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.