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Finding the Fourth Proportional to 36,305.92, 54,420.16 and 20,689.92

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Solution

The fourth proportional to 36,305.92, 54,420.16 and 20,689.92 is: 31,012.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,305.92 : 54,420.16 = 20,689.92 : x
  2. Step 2: Convert to fraction form
    36,305.92/54,420.16 = 20,689.92/x
  3. Step 3: Cross multiply
    36,305.92x = 54,420.16 × 20,689.92
  4. Step 4: Simplify right side
    36,305.92x = 1,125,948,756.79
  5. Step 5: Solve for x
    x = 1,125,948,756.79/36,305.92
  6. Step 6: Final answer
    x = 31,012.81

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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.