Home / 80,672.18-121,008.27-25,272.50

Finding the Fourth Proportional to 80,672.18, 121,008.27 and 25,272.50

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Solution

The fourth proportional to 80,672.18, 121,008.27 and 25,272.50 is: 37,908.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,672.18 : 121,008.27 = 25,272.50 : x
  2. Step 2: Convert to fraction form
    80,672.18/121,008.27 = 25,272.50/x
  3. Step 3: Cross multiply
    80,672.18x = 121,008.27 × 25,272.50
  4. Step 4: Simplify right side
    80,672.18x = 3,058,181,503.58
  5. Step 5: Solve for x
    x = 3,058,181,503.58/80,672.18
  6. Step 6: Final answer
    x = 37,908.75

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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.