Home / 81,025.92-121,538.16-28,423.08

Finding the Fourth Proportional to 81,025.92, 121,538.16 and 28,423.08

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Solution

The fourth proportional to 81,025.92, 121,538.16 and 28,423.08 is: 42,634.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,025.92 : 121,538.16 = 28,423.08 : x
  2. Step 2: Convert to fraction form
    81,025.92/121,538.16 = 28,423.08/x
  3. Step 3: Cross multiply
    81,025.92x = 121,538.16 × 28,423.08
  4. Step 4: Simplify right side
    81,025.92x = 3,454,488,844.73
  5. Step 5: Solve for x
    x = 3,454,488,844.73/81,025.92
  6. Step 6: Final answer
    x = 42,634.37

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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.