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Finding the Fourth Proportional to 83,898,654.30, 125,635,405.05 and 66,892,542.30

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Solution

The fourth proportional to 83,898,654.30, 125,635,405.05 and 66,892,542.30 is: 100,169,325.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,898,654.30 : 125,635,405.05 = 66,892,542.30 : x
  2. Step 2: Convert to fraction form
    83,898,654.30/125,635,405.05 = 66,892,542.30/x
  3. Step 3: Cross multiply
    83,898,654.30x = 125,635,405.05 × 66,892,542.30
  4. Step 4: Simplify right side
    83,898,654.30x = 8,404,071,646,684,758
  5. Step 5: Solve for x
    x = 8,404,071,646,684,758/83,898,654.30
  6. Step 6: Final answer
    x = 100,169,325.92

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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.