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Finding the Fourth Proportional to 87,545.28, 120,810.56 and 49,818.56

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Solution

The fourth proportional to 87,545.28, 120,810.56 and 49,818.56 is: 68,748.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,545.28 : 120,810.56 = 49,818.56 : x
  2. Step 2: Convert to fraction form
    87,545.28/120,810.56 = 49,818.56/x
  3. Step 3: Cross multiply
    87,545.28x = 120,810.56 × 49,818.56
  4. Step 4: Simplify right side
    87,545.28x = 6,018,608,131.99
  5. Step 5: Solve for x
    x = 6,018,608,131.99/87,545.28
  6. Step 6: Final answer
    x = 68,748.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.