Home / 78,577,399.20-117,866,098.80-74,113,294.80

Finding the Fourth Proportional to 78,577,399.20, 117,866,098.80 and 74,113,294.80

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Solution

The fourth proportional to 78,577,399.20, 117,866,098.80 and 74,113,294.80 is: 111,169,942.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,577,399.20 : 117,866,098.80 = 74,113,294.80 : x
  2. Step 2: Convert to fraction form
    78,577,399.20/117,866,098.80 = 74,113,294.80/x
  3. Step 3: Cross multiply
    78,577,399.20x = 117,866,098.80 × 74,113,294.80
  4. Step 4: Simplify right side
    78,577,399.20x = 8,735,444,927,290,326
  5. Step 5: Solve for x
    x = 8,735,444,927,290,326/78,577,399.20
  6. Step 6: Final answer
    x = 111,169,942.20

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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.