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Finding the Fourth Proportional to 40,355.96, 60,546.29 and 20,648.52

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Solution

The fourth proportional to 40,355.96, 60,546.29 and 20,648.52 is: 30,979.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,355.96 : 60,546.29 = 20,648.52 : x
  2. Step 2: Convert to fraction form
    40,355.96/60,546.29 = 20,648.52/x
  3. Step 3: Cross multiply
    40,355.96x = 60,546.29 × 20,648.52
  4. Step 4: Simplify right side
    40,355.96x = 1,250,191,176.75
  5. Step 5: Solve for x
    x = 1,250,191,176.75/40,355.96
  6. Step 6: Final answer
    x = 30,979.10

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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.