Home / 54,581.40-81,872.10-21,302.55

Finding the Fourth Proportional to 54,581.40, 81,872.10 and 21,302.55

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Solution

The fourth proportional to 54,581.40, 81,872.10 and 21,302.55 is: 31,953.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,581.40 : 81,872.10 = 21,302.55 : x
  2. Step 2: Convert to fraction form
    54,581.40/81,872.10 = 21,302.55/x
  3. Step 3: Cross multiply
    54,581.40x = 81,872.10 × 21,302.55
  4. Step 4: Simplify right side
    54,581.40x = 1,744,084,503.86
  5. Step 5: Solve for x
    x = 1,744,084,503.86/54,581.40
  6. Step 6: Final answer
    x = 31,953.83

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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.