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Finding the Fourth Proportional to 60,309.38, 90,446.79 and 20,324

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Solution

The fourth proportional to 60,309.38, 90,446.79 and 20,324 is: 30,480.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,309.38 : 90,446.79 = 20,324 : x
  2. Step 2: Convert to fraction form
    60,309.38/90,446.79 = 20,324/x
  3. Step 3: Cross multiply
    60,309.38x = 90,446.79 × 20,324
  4. Step 4: Simplify right side
    60,309.38x = 1,838,240,559.96
  5. Step 5: Solve for x
    x = 1,838,240,559.96/60,309.38
  6. Step 6: Final answer
    x = 30,480.18

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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.