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Finding the Fourth Proportional to 66,691.76, 100,036.52 and 17,443.76

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Solution

The fourth proportional to 66,691.76, 100,036.52 and 17,443.76 is: 26,165.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,691.76 : 100,036.52 = 17,443.76 : x
  2. Step 2: Convert to fraction form
    66,691.76/100,036.52 = 17,443.76/x
  3. Step 3: Cross multiply
    66,691.76x = 100,036.52 × 17,443.76
  4. Step 4: Simplify right side
    66,691.76x = 1,745,013,046.12
  5. Step 5: Solve for x
    x = 1,745,013,046.12/66,691.76
  6. Step 6: Final answer
    x = 26,165.35

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1.5x scale

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.