Home / 80,867.40-121,301.10-25,456.20

Finding the Fourth Proportional to 80,867.40, 121,301.10 and 25,456.20

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Solution

The fourth proportional to 80,867.40, 121,301.10 and 25,456.20 is: 38,184.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,867.40 : 121,301.10 = 25,456.20 : x
  2. Step 2: Convert to fraction form
    80,867.40/121,301.10 = 25,456.20/x
  3. Step 3: Cross multiply
    80,867.40x = 121,301.10 × 25,456.20
  4. Step 4: Simplify right side
    80,867.40x = 3,087,865,061.82
  5. Step 5: Solve for x
    x = 3,087,865,061.82/80,867.40
  6. Step 6: Final answer
    x = 38,184.30

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1.5x scale

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.