Home / 87,478.72-120,724.47-49,240.73

Finding the Fourth Proportional to 87,478.72, 120,724.47 and 49,240.73

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Solution

The fourth proportional to 87,478.72, 120,724.47 and 49,240.73 is: 67,954.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,478.72 : 120,724.47 = 49,240.73 : x
  2. Step 2: Convert to fraction form
    87,478.72/120,724.47 = 49,240.73/x
  3. Step 3: Cross multiply
    87,478.72x = 120,724.47 × 49,240.73
  4. Step 4: Simplify right side
    87,478.72x = 5,944,561,031.66
  5. Step 5: Solve for x
    x = 5,944,561,031.66/87,478.72
  6. Step 6: Final answer
    x = 67,954.37

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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.