Home / 80,829.76-121,264.14-25,425.76

Finding the Fourth Proportional to 80,829.76, 121,264.14 and 25,425.76

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Solution

The fourth proportional to 80,829.76, 121,264.14 and 25,425.76 is: 38,144.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,829.76 : 121,264.14 = 25,425.76 : x
  2. Step 2: Convert to fraction form
    80,829.76/121,264.14 = 25,425.76/x
  3. Step 3: Cross multiply
    80,829.76x = 121,264.14 × 25,425.76
  4. Step 4: Simplify right side
    80,829.76x = 3,083,232,920.25
  5. Step 5: Solve for x
    x = 3,083,232,920.25/80,829.76
  6. Step 6: Final answer
    x = 38,144.77

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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.