Home / 87,545.64-120,812.88-51,748.56

Finding the Fourth Proportional to 87,545.64, 120,812.88 and 51,748.56

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Solution

The fourth proportional to 87,545.64, 120,812.88 and 51,748.56 is: 71,412.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,545.64 : 120,812.88 = 51,748.56 : x
  2. Step 2: Convert to fraction form
    87,545.64/120,812.88 = 51,748.56/x
  3. Step 3: Cross multiply
    87,545.64x = 120,812.88 × 51,748.56
  4. Step 4: Simplify right side
    87,545.64x = 6,251,892,569.45
  5. Step 5: Solve for x
    x = 6,251,892,569.45/87,545.64
  6. Step 6: Final answer
    x = 71,412.95

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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.