Home / 87,490.60-131,256.81-28,326.34

Finding the Fourth Proportional to 87,490.60, 131,256.81 and 28,326.34

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Solution

The fourth proportional to 87,490.60, 131,256.81 and 28,326.34 is: 42,496.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,490.60 : 131,256.81 = 28,326.34 : x
  2. Step 2: Convert to fraction form
    87,490.60/131,256.81 = 28,326.34/x
  3. Step 3: Cross multiply
    87,490.60x = 131,256.81 × 28,326.34
  4. Step 4: Simplify right side
    87,490.60x = 3,718,024,264.87
  5. Step 5: Solve for x
    x = 3,718,024,264.87/87,490.60
  6. Step 6: Final answer
    x = 42,496.27

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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.