Home / 85,828,236.80-128,574,393.60-51,648,051.20

Finding the Fourth Proportional to 85,828,236.80, 128,574,393.60 and 51,648,051.20

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Solution

The fourth proportional to 85,828,236.80, 128,574,393.60 and 51,648,051.20 is: 77,371,004.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,828,236.80 : 128,574,393.60 = 51,648,051.20 : x
  2. Step 2: Convert to fraction form
    85,828,236.80/128,574,393.60 = 51,648,051.20/x
  3. Step 3: Cross multiply
    85,828,236.80x = 128,574,393.60 × 51,648,051.20
  4. Step 4: Simplify right side
    85,828,236.80x = 6,640,616,863,661,752
  5. Step 5: Solve for x
    x = 6,640,616,863,661,752/85,828,236.80
  6. Step 6: Final answer
    x = 77,371,004.13

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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.