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Finding the Fourth Proportional to 87,585.50, 120,868.13 and 49,859.75

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Solution

The fourth proportional to 87,585.50, 120,868.13 and 49,859.75 is: 68,806.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,585.50 : 120,868.13 = 49,859.75 : x
  2. Step 2: Convert to fraction form
    87,585.50/120,868.13 = 49,859.75/x
  3. Step 3: Cross multiply
    87,585.50x = 120,868.13 × 49,859.75
  4. Step 4: Simplify right side
    87,585.50x = 6,026,454,744.77
  5. Step 5: Solve for x
    x = 6,026,454,744.77/87,585.50
  6. Step 6: Final answer
    x = 68,806.53

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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.