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Finding the Fourth Proportional to 89,711.40, 134,542.80 and 26,531.40

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Solution

The fourth proportional to 89,711.40, 134,542.80 and 26,531.40 is: 39,789.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,711.40 : 134,542.80 = 26,531.40 : x
  2. Step 2: Convert to fraction form
    89,711.40/134,542.80 = 26,531.40/x
  3. Step 3: Cross multiply
    89,711.40x = 134,542.80 × 26,531.40
  4. Step 4: Simplify right side
    89,711.40x = 3,569,608,843.92
  5. Step 5: Solve for x
    x = 3,569,608,843.92/89,711.40
  6. Step 6: Final answer
    x = 39,789.91

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1.5x scale

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.