Home / 87,818.34-131,727.86-21,258.36

Finding the Fourth Proportional to 87,818.34, 131,727.86 and 21,258.36

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Solution

The fourth proportional to 87,818.34, 131,727.86 and 21,258.36 is: 31,887.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,818.34 : 131,727.86 = 21,258.36 : x
  2. Step 2: Convert to fraction form
    87,818.34/131,727.86 = 21,258.36/x
  3. Step 3: Cross multiply
    87,818.34x = 131,727.86 × 21,258.36
  4. Step 4: Simplify right side
    87,818.34x = 2,800,318,737.32
  5. Step 5: Solve for x
    x = 2,800,318,737.32/87,818.34
  6. Step 6: Final answer
    x = 31,887.63

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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.