Home / 78,732,091.20-118,098,136.80-40,468,339.20

Finding the Fourth Proportional to 78,732,091.20, 118,098,136.80 and 40,468,339.20

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Solution

The fourth proportional to 78,732,091.20, 118,098,136.80 and 40,468,339.20 is: 60,702,508.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,091.20 : 118,098,136.80 = 40,468,339.20 : x
  2. Step 2: Convert to fraction form
    78,732,091.20/118,098,136.80 = 40,468,339.20/x
  3. Step 3: Cross multiply
    78,732,091.20x = 118,098,136.80 × 40,468,339.20
  4. Step 4: Simplify right side
    78,732,091.20x = 4,779,235,458,910,403
  5. Step 5: Solve for x
    x = 4,779,235,458,910,403/78,732,091.20
  6. Step 6: Final answer
    x = 60,702,508.80

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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.