Home / 87,431.12-131,132.70-31,260.76

Finding the Fourth Proportional to 87,431.12, 131,132.70 and 31,260.76

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Solution

The fourth proportional to 87,431.12, 131,132.70 and 31,260.76 is: 46,886.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,431.12 : 131,132.70 = 31,260.76 : x
  2. Step 2: Convert to fraction form
    87,431.12/131,132.70 = 31,260.76/x
  3. Step 3: Cross multiply
    87,431.12x = 131,132.70 × 31,260.76
  4. Step 4: Simplify right side
    87,431.12x = 4,099,307,862.85
  5. Step 5: Solve for x
    x = 4,099,307,862.85/87,431.12
  6. Step 6: Final answer
    x = 46,886.14

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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.