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Finding the Fourth Proportional to 91,007.52, 136,572.77 and 31,843.70

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Solution

The fourth proportional to 91,007.52, 136,572.77 and 31,843.70 is: 47,787.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,007.52 : 136,572.77 = 31,843.70 : x
  2. Step 2: Convert to fraction form
    91,007.52/136,572.77 = 31,843.70/x
  3. Step 3: Cross multiply
    91,007.52x = 136,572.77 × 31,843.70
  4. Step 4: Simplify right side
    91,007.52x = 4,348,982,224.94
  5. Step 5: Solve for x
    x = 4,348,982,224.94/91,007.52
  6. Step 6: Final answer
    x = 47,787.07

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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.