Home / 87,830.83-131,665.51-31,657.20

Finding the Fourth Proportional to 87,830.83, 131,665.51 and 31,657.20

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Solution

The fourth proportional to 87,830.83, 131,665.51 and 31,657.20 is: 47,456.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,830.83 : 131,665.51 = 31,657.20 : x
  2. Step 2: Convert to fraction form
    87,830.83/131,665.51 = 31,657.20/x
  3. Step 3: Cross multiply
    87,830.83x = 131,665.51 × 31,657.20
  4. Step 4: Simplify right side
    87,830.83x = 4,168,161,383.17
  5. Step 5: Solve for x
    x = 4,168,161,383.17/87,830.83
  6. Step 6: Final answer
    x = 47,456.70

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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.