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Finding the Fourth Proportional to 90,700.71, 136,052.42 and 34,543.92

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Solution

The fourth proportional to 90,700.71, 136,052.42 and 34,543.92 is: 51,816.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,700.71 : 136,052.42 = 34,543.92 : x
  2. Step 2: Convert to fraction form
    90,700.71/136,052.42 = 34,543.92/x
  3. Step 3: Cross multiply
    90,700.71x = 136,052.42 × 34,543.92
  4. Step 4: Simplify right side
    90,700.71x = 4,699,783,912.29
  5. Step 5: Solve for x
    x = 4,699,783,912.29/90,700.71
  6. Step 6: Final answer
    x = 51,816.40

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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.