Home / 78,732,321.60-118,098,482.40-72,496,747.20

Finding the Fourth Proportional to 78,732,321.60, 118,098,482.40 and 72,496,747.20

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Solution

The fourth proportional to 78,732,321.60, 118,098,482.40 and 72,496,747.20 is: 108,745,120.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,321.60 : 118,098,482.40 = 72,496,747.20 : x
  2. Step 2: Convert to fraction form
    78,732,321.60/118,098,482.40 = 72,496,747.20/x
  3. Step 3: Cross multiply
    78,732,321.60x = 118,098,482.40 × 72,496,747.20
  4. Step 4: Simplify right side
    78,732,321.60x = 8,561,755,823,256,450
  5. Step 5: Solve for x
    x = 8,561,755,823,256,450/78,732,321.60
  6. Step 6: Final answer
    x = 108,745,120.80

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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.