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Finding the Fourth Proportional to 48,242.85, 72,363.62 and 21,581.79

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Solution

The fourth proportional to 48,242.85, 72,363.62 and 21,581.79 is: 32,372.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,242.85 : 72,363.62 = 21,581.79 : x
  2. Step 2: Convert to fraction form
    48,242.85/72,363.62 = 21,581.79/x
  3. Step 3: Cross multiply
    48,242.85x = 72,363.62 × 21,581.79
  4. Step 4: Simplify right side
    48,242.85x = 1,561,735,980.75
  5. Step 5: Solve for x
    x = 1,561,735,980.75/48,242.85
  6. Step 6: Final answer
    x = 32,372.39

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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.