Home / 87,857.15-121,240.28-49,618.27

Finding the Fourth Proportional to 87,857.15, 121,240.28 and 49,618.27

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Solution

The fourth proportional to 87,857.15, 121,240.28 and 49,618.27 is: 68,471.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,857.15 : 121,240.28 = 49,618.27 : x
  2. Step 2: Convert to fraction form
    87,857.15/121,240.28 = 49,618.27/x
  3. Step 3: Cross multiply
    87,857.15x = 121,240.28 × 49,618.27
  4. Step 4: Simplify right side
    87,857.15x = 6,015,732,093.62
  5. Step 5: Solve for x
    x = 6,015,732,093.62/87,857.15
  6. Step 6: Final answer
    x = 68,471.74

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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.