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Finding the Fourth Proportional to 65,078.60, 97,515.80 and 38,768.96

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Solution

The fourth proportional to 65,078.60, 97,515.80 and 38,768.96 is: 58,092.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,078.60 : 97,515.80 = 38,768.96 : x
  2. Step 2: Convert to fraction form
    65,078.60/97,515.80 = 38,768.96/x
  3. Step 3: Cross multiply
    65,078.60x = 97,515.80 × 38,768.96
  4. Step 4: Simplify right side
    65,078.60x = 3,780,586,149.57
  5. Step 5: Solve for x
    x = 3,780,586,149.57/65,078.60
  6. Step 6: Final answer
    x = 58,092.62

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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.