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Finding the Fourth Proportional to 73,001.60, 109,732.80 and 68,854.40

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Solution

The fourth proportional to 73,001.60, 109,732.80 and 68,854.40 is: 103,498.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,001.60 : 109,732.80 = 68,854.40 : x
  2. Step 2: Convert to fraction form
    73,001.60/109,732.80 = 68,854.40/x
  3. Step 3: Cross multiply
    73,001.60x = 109,732.80 × 68,854.40
  4. Step 4: Simplify right side
    73,001.60x = 7,555,586,104.32
  5. Step 5: Solve for x
    x = 7,555,586,104.32/73,001.60
  6. Step 6: Final answer
    x = 103,498.91

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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.