Home / 87,712.20-131,569.53-28,548.18

Finding the Fourth Proportional to 87,712.20, 131,569.53 and 28,548.18

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Solution

The fourth proportional to 87,712.20, 131,569.53 and 28,548.18 is: 42,822.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,712.20 : 131,569.53 = 28,548.18 : x
  2. Step 2: Convert to fraction form
    87,712.20/131,569.53 = 28,548.18/x
  3. Step 3: Cross multiply
    87,712.20x = 131,569.53 × 28,548.18
  4. Step 4: Simplify right side
    87,712.20x = 3,756,070,624.96
  5. Step 5: Solve for x
    x = 3,756,070,624.96/87,712.20
  6. Step 6: Final answer
    x = 42,822.67

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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.