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Finding the Fourth Proportional to 91,279.64, 136,935.03 and 40,697.02

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Solution

The fourth proportional to 91,279.64, 136,935.03 and 40,697.02 is: 61,052.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,279.64 : 136,935.03 = 40,697.02 : x
  2. Step 2: Convert to fraction form
    91,279.64/136,935.03 = 40,697.02/x
  3. Step 3: Cross multiply
    91,279.64x = 136,935.03 × 40,697.02
  4. Step 4: Simplify right side
    91,279.64x = 5,572,847,654.61
  5. Step 5: Solve for x
    x = 5,572,847,654.61/91,279.64
  6. Step 6: Final answer
    x = 61,052.47

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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.