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Finding the Fourth Proportional to 66,487.47, 99,749.97 and 27,072.87

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Solution

The fourth proportional to 66,487.47, 99,749.97 and 27,072.87 is: 40,616.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,487.47 : 99,749.97 = 27,072.87 : x
  2. Step 2: Convert to fraction form
    66,487.47/99,749.97 = 27,072.87/x
  3. Step 3: Cross multiply
    66,487.47x = 99,749.97 × 27,072.87
  4. Step 4: Simplify right side
    66,487.47x = 2,700,517,970.31
  5. Step 5: Solve for x
    x = 2,700,517,970.31/66,487.47
  6. Step 6: Final answer
    x = 40,616.95

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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.