Home / 78,732,002.80-118,098,004.20-54,179,428.60

Finding the Fourth Proportional to 78,732,002.80, 118,098,004.20 and 54,179,428.60

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Solution

The fourth proportional to 78,732,002.80, 118,098,004.20 and 54,179,428.60 is: 81,269,142.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,002.80 : 118,098,004.20 = 54,179,428.60 : x
  2. Step 2: Convert to fraction form
    78,732,002.80/118,098,004.20 = 54,179,428.60/x
  3. Step 3: Cross multiply
    78,732,002.80x = 118,098,004.20 × 54,179,428.60
  4. Step 4: Simplify right side
    78,732,002.80x = 6,398,482,386,356,400
  5. Step 5: Solve for x
    x = 6,398,482,386,356,400/78,732,002.80
  6. Step 6: Final answer
    x = 81,269,142.90

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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.