Home / 81,248.26-121,872.15-28,645.06

Finding the Fourth Proportional to 81,248.26, 121,872.15 and 28,645.06

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Solution

The fourth proportional to 81,248.26, 121,872.15 and 28,645.06 is: 42,967.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,248.26 : 121,872.15 = 28,645.06 : x
  2. Step 2: Convert to fraction form
    81,248.26/121,872.15 = 28,645.06/x
  3. Step 3: Cross multiply
    81,248.26x = 121,872.15 × 28,645.06
  4. Step 4: Simplify right side
    81,248.26x = 3,491,035,049.08
  5. Step 5: Solve for x
    x = 3,491,035,049.08/81,248.26
  6. Step 6: Final answer
    x = 42,967.51

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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.