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Finding the Fourth Proportional to 66,574.78, 99,862.17 and 27,124.95

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Solution

The fourth proportional to 66,574.78, 99,862.17 and 27,124.95 is: 40,687.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,574.78 : 99,862.17 = 27,124.95 : x
  2. Step 2: Convert to fraction form
    66,574.78/99,862.17 = 27,124.95/x
  3. Step 3: Cross multiply
    66,574.78x = 99,862.17 × 27,124.95
  4. Step 4: Simplify right side
    66,574.78x = 2,708,756,368.14
  5. Step 5: Solve for x
    x = 2,708,756,368.14/66,574.78
  6. Step 6: Final answer
    x = 40,687.43

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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.