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Finding the Fourth Proportional to 91,207.62, 136,810.71 and 49,107.42

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Solution

The fourth proportional to 91,207.62, 136,810.71 and 49,107.42 is: 73,660.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,207.62 : 136,810.71 = 49,107.42 : x
  2. Step 2: Convert to fraction form
    91,207.62/136,810.71 = 49,107.42/x
  3. Step 3: Cross multiply
    91,207.62x = 136,810.71 × 49,107.42
  4. Step 4: Simplify right side
    91,207.62x = 6,718,420,996.47
  5. Step 5: Solve for x
    x = 6,718,420,996.47/91,207.62
  6. Step 6: Final answer
    x = 73,660.74

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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.