Home / 45,176.72-67,765.24-31,989.20

Finding the Fourth Proportional to 45,176.72, 67,765.24 and 31,989.20

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Solution

The fourth proportional to 45,176.72, 67,765.24 and 31,989.20 is: 47,983.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,176.72 : 67,765.24 = 31,989.20 : x
  2. Step 2: Convert to fraction form
    45,176.72/67,765.24 = 31,989.20/x
  3. Step 3: Cross multiply
    45,176.72x = 67,765.24 × 31,989.20
  4. Step 4: Simplify right side
    45,176.72x = 2,167,755,815.41
  5. Step 5: Solve for x
    x = 2,167,755,815.41/45,176.72
  6. Step 6: Final answer
    x = 47,983.91

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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.