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Finding the Fourth Proportional to 65,691.57, 90,654.35 and 35,476.89

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Solution

The fourth proportional to 65,691.57, 90,654.35 and 35,476.89 is: 48,958.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,691.57 : 90,654.35 = 35,476.89 : x
  2. Step 2: Convert to fraction form
    65,691.57/90,654.35 = 35,476.89/x
  3. Step 3: Cross multiply
    65,691.57x = 90,654.35 × 35,476.89
  4. Step 4: Simplify right side
    65,691.57x = 3,216,134,225.59
  5. Step 5: Solve for x
    x = 3,216,134,225.59/65,691.57
  6. Step 6: Final answer
    x = 48,958.10

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1.5x scale

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.