Home / 87,818.29-131,727.74-21,258.32

Finding the Fourth Proportional to 87,818.29, 131,727.74 and 21,258.32

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Solution

The fourth proportional to 87,818.29, 131,727.74 and 21,258.32 is: 31,887.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,818.29 : 131,727.74 = 21,258.32 : x
  2. Step 2: Convert to fraction form
    87,818.29/131,727.74 = 21,258.32/x
  3. Step 3: Cross multiply
    87,818.29x = 131,727.74 × 21,258.32
  4. Step 4: Simplify right side
    87,818.29x = 2,800,309,684.87
  5. Step 5: Solve for x
    x = 2,800,309,684.87/87,818.29
  6. Step 6: Final answer
    x = 31,887.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.