Home / 87,718.39-121,052.68-49,479.76

Finding the Fourth Proportional to 87,718.39, 121,052.68 and 49,479.76

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Solution

The fourth proportional to 87,718.39, 121,052.68 and 49,479.76 is: 68,282.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,718.39 : 121,052.68 = 49,479.76 : x
  2. Step 2: Convert to fraction form
    87,718.39/121,052.68 = 49,479.76/x
  3. Step 3: Cross multiply
    87,718.39x = 121,052.68 × 49,479.76
  4. Step 4: Simplify right side
    87,718.39x = 5,989,657,581.37
  5. Step 5: Solve for x
    x = 5,989,657,581.37/87,718.39
  6. Step 6: Final answer
    x = 68,282.80

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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.