Home / 87,625.40-131,425.74-28,461.78

Finding the Fourth Proportional to 87,625.40, 131,425.74 and 28,461.78

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Solution

The fourth proportional to 87,625.40, 131,425.74 and 28,461.78 is: 42,688.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,625.40 : 131,425.74 = 28,461.78 : x
  2. Step 2: Convert to fraction form
    87,625.40/131,425.74 = 28,461.78/x
  3. Step 3: Cross multiply
    87,625.40x = 131,425.74 × 28,461.78
  4. Step 4: Simplify right side
    87,625.40x = 3,740,610,498.22
  5. Step 5: Solve for x
    x = 3,740,610,498.22/87,625.40
  6. Step 6: Final answer
    x = 42,688.66

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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.