Home / 87,865.29-121,253.55-47,578.20

Finding the Fourth Proportional to 87,865.29, 121,253.55 and 47,578.20

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Solution

The fourth proportional to 87,865.29, 121,253.55 and 47,578.20 is: 65,657.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,865.29 : 121,253.55 = 47,578.20 : x
  2. Step 2: Convert to fraction form
    87,865.29/121,253.55 = 47,578.20/x
  3. Step 3: Cross multiply
    87,865.29x = 121,253.55 × 47,578.20
  4. Step 4: Simplify right side
    87,865.29x = 5,769,025,652.61
  5. Step 5: Solve for x
    x = 5,769,025,652.61/87,865.29
  6. Step 6: Final answer
    x = 65,657.62

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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.