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Finding the Fourth Proportional to 66,689.92, 100,062.52 and 29,230.58

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Solution

The fourth proportional to 66,689.92, 100,062.52 and 29,230.58 is: 43,857.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,689.92 : 100,062.52 = 29,230.58 : x
  2. Step 2: Convert to fraction form
    66,689.92/100,062.52 = 29,230.58/x
  3. Step 3: Cross multiply
    66,689.92x = 100,062.52 × 29,230.58
  4. Step 4: Simplify right side
    66,689.92x = 2,924,885,495.86
  5. Step 5: Solve for x
    x = 2,924,885,495.86/66,689.92
  6. Step 6: Final answer
    x = 43,857.98

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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.