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Finding the Fourth Proportional to 65,761.72, 98,667.42 and 39,484.78

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Solution

The fourth proportional to 65,761.72, 98,667.42 and 39,484.78 is: 59,242.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,761.72 : 98,667.42 = 39,484.78 : x
  2. Step 2: Convert to fraction form
    65,761.72/98,667.42 = 39,484.78/x
  3. Step 3: Cross multiply
    65,761.72x = 98,667.42 × 39,484.78
  4. Step 4: Simplify right side
    65,761.72x = 3,895,861,371.87
  5. Step 5: Solve for x
    x = 3,895,861,371.87/65,761.72
  6. Step 6: Final answer
    x = 59,242.08

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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.