Home / 87,726.40-131,438.40-40,883.20

Finding the Fourth Proportional to 87,726.40, 131,438.40 and 40,883.20

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Solution

The fourth proportional to 87,726.40, 131,438.40 and 40,883.20 is: 61,254.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,726.40 : 131,438.40 = 40,883.20 : x
  2. Step 2: Convert to fraction form
    87,726.40/131,438.40 = 40,883.20/x
  3. Step 3: Cross multiply
    87,726.40x = 131,438.40 × 40,883.20
  4. Step 4: Simplify right side
    87,726.40x = 5,373,622,394.88
  5. Step 5: Solve for x
    x = 5,373,622,394.88/87,726.40
  6. Step 6: Final answer
    x = 61,254.34

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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.