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Finding the Fourth Proportional to 83,898,452.80, 125,635,102.80 and 66,892,340.80

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Solution

The fourth proportional to 83,898,452.80, 125,635,102.80 and 66,892,340.80 is: 100,169,023.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,898,452.80 : 125,635,102.80 = 66,892,340.80 : x
  2. Step 2: Convert to fraction form
    83,898,452.80/125,635,102.80 = 66,892,340.80/x
  3. Step 3: Cross multiply
    83,898,452.80x = 125,635,102.80 × 66,892,340.80
  4. Step 4: Simplify right side
    83,898,452.80x = 8,404,026,112,940,634
  5. Step 5: Solve for x
    x = 8,404,026,112,940,634/83,898,452.80
  6. Step 6: Final answer
    x = 100,169,023.77

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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.