Home / 87,712.92-121,035.32-49,478.48

Finding the Fourth Proportional to 87,712.92, 121,035.32 and 49,478.48

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Solution

The fourth proportional to 87,712.92, 121,035.32 and 49,478.48 is: 68,275.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,712.92 : 121,035.32 = 49,478.48 : x
  2. Step 2: Convert to fraction form
    87,712.92/121,035.32 = 49,478.48/x
  3. Step 3: Cross multiply
    87,712.92x = 121,035.32 × 49,478.48
  4. Step 4: Simplify right side
    87,712.92x = 5,988,643,659.91
  5. Step 5: Solve for x
    x = 5,988,643,659.91/87,712.92
  6. Step 6: Final answer
    x = 68,275.50

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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.