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Finding the Fourth Proportional to 87,605.92, 131,407.02 and 28,441.50

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Solution

The fourth proportional to 87,605.92, 131,407.02 and 28,441.50 is: 42,661.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,605.92 : 131,407.02 = 28,441.50 : x
  2. Step 2: Convert to fraction form
    87,605.92/131,407.02 = 28,441.50/x
  3. Step 3: Cross multiply
    87,605.92x = 131,407.02 × 28,441.50
  4. Step 4: Simplify right side
    87,605.92x = 3,737,412,759.33
  5. Step 5: Solve for x
    x = 3,737,412,759.33/87,605.92
  6. Step 6: Final answer
    x = 42,661.65

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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.