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Finding the Fourth Proportional to 39,456.50, 54,449.97 and 22,689.50

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Solution

The fourth proportional to 39,456.50, 54,449.97 and 22,689.50 is: 31,311.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,456.50 : 54,449.97 = 22,689.50 : x
  2. Step 2: Convert to fraction form
    39,456.50/54,449.97 = 22,689.50/x
  3. Step 3: Cross multiply
    39,456.50x = 54,449.97 × 22,689.50
  4. Step 4: Simplify right side
    39,456.50x = 1,235,442,594.32
  5. Step 5: Solve for x
    x = 1,235,442,594.32/39,456.50
  6. Step 6: Final answer
    x = 31,311.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.