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Finding the Fourth Proportional to 66,689.82, 100,100.88 and 29,275.92

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Solution

The fourth proportional to 66,689.82, 100,100.88 and 29,275.92 is: 43,942.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,689.82 : 100,100.88 = 29,275.92 : x
  2. Step 2: Convert to fraction form
    66,689.82/100,100.88 = 29,275.92/x
  3. Step 3: Cross multiply
    66,689.82x = 100,100.88 × 29,275.92
  4. Step 4: Simplify right side
    66,689.82x = 2,930,545,354.81
  5. Step 5: Solve for x
    x = 2,930,545,354.81/66,689.82
  6. Step 6: Final answer
    x = 43,942.92

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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.