Home / 87,938.10-131,907.15-31,805.10

Finding the Fourth Proportional to 87,938.10, 131,907.15 and 31,805.10

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Solution

The fourth proportional to 87,938.10, 131,907.15 and 31,805.10 is: 47,707.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,938.10 : 131,907.15 = 31,805.10 : x
  2. Step 2: Convert to fraction form
    87,938.10/131,907.15 = 31,805.10/x
  3. Step 3: Cross multiply
    87,938.10x = 131,907.15 × 31,805.10
  4. Step 4: Simplify right side
    87,938.10x = 4,195,320,096.47
  5. Step 5: Solve for x
    x = 4,195,320,096.47/87,938.10
  6. Step 6: Final answer
    x = 47,707.65

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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.