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Finding the Fourth Proportional to 66,432, 91,672.87 and 37,747.92

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Solution

The fourth proportional to 66,432, 91,672.87 and 37,747.92 is: 52,090.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,432 : 91,672.87 = 37,747.92 : x
  2. Step 2: Convert to fraction form
    66,432/91,672.87 = 37,747.92/x
  3. Step 3: Cross multiply
    66,432x = 91,672.87 × 37,747.92
  4. Step 4: Simplify right side
    66,432x = 3,460,460,162.93
  5. Step 5: Solve for x
    x = 3,460,460,162.93/66,432
  6. Step 6: Final answer
    x = 52,090.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.