Home / 87,689.17-131,534.97-28,525.15

Finding the Fourth Proportional to 87,689.17, 131,534.97 and 28,525.15

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Solution

The fourth proportional to 87,689.17, 131,534.97 and 28,525.15 is: 42,788.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,689.17 : 131,534.97 = 28,525.15 : x
  2. Step 2: Convert to fraction form
    87,689.17/131,534.97 = 28,525.15/x
  3. Step 3: Cross multiply
    87,689.17x = 131,534.97 × 28,525.15
  4. Step 4: Simplify right side
    87,689.17x = 3,752,054,749.50
  5. Step 5: Solve for x
    x = 3,752,054,749.50/87,689.17
  6. Step 6: Final answer
    x = 42,788.12

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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.