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Finding the Fourth Proportional to 54,402.56, 81,565.55 and 21,094.55

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Solution

The fourth proportional to 54,402.56, 81,565.55 and 21,094.55 is: 31,626.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,402.56 : 81,565.55 = 21,094.55 : x
  2. Step 2: Convert to fraction form
    54,402.56/81,565.55 = 21,094.55/x
  3. Step 3: Cross multiply
    54,402.56x = 81,565.55 × 21,094.55
  4. Step 4: Simplify right side
    54,402.56x = 1,720,588,572.75
  5. Step 5: Solve for x
    x = 1,720,588,572.75/54,402.56
  6. Step 6: Final answer
    x = 31,626.98

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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.