Home / 42,776,013.60-64,164,020.40-21,202,279.20

Finding the Fourth Proportional to 42,776,013.60, 64,164,020.40 and 21,202,279.20

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Solution

The fourth proportional to 42,776,013.60, 64,164,020.40 and 21,202,279.20 is: 31,803,418.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,776,013.60 : 64,164,020.40 = 21,202,279.20 : x
  2. Step 2: Convert to fraction form
    42,776,013.60/64,164,020.40 = 21,202,279.20/x
  3. Step 3: Cross multiply
    42,776,013.60x = 64,164,020.40 × 21,202,279.20
  4. Step 4: Simplify right side
    42,776,013.60x = 1,360,423,475,115,295.50
  5. Step 5: Solve for x
    x = 1,360,423,475,115,295.50/42,776,013.60
  6. Step 6: Final answer
    x = 31,803,418.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.