Home / 81,007.50-121,517.61-21,842.28

Finding the Fourth Proportional to 81,007.50, 121,517.61 and 21,842.28

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Solution

The fourth proportional to 81,007.50, 121,517.61 and 21,842.28 is: 32,765.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,007.50 : 121,517.61 = 21,842.28 : x
  2. Step 2: Convert to fraction form
    81,007.50/121,517.61 = 21,842.28/x
  3. Step 3: Cross multiply
    81,007.50x = 121,517.61 × 21,842.28
  4. Step 4: Simplify right side
    81,007.50x = 2,654,221,662.55
  5. Step 5: Solve for x
    x = 2,654,221,662.55/81,007.50
  6. Step 6: Final answer
    x = 32,765.13

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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.