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Finding the Fourth Proportional to 54,805.01, 75,633.03 and 30,931.17

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Solution

The fourth proportional to 54,805.01, 75,633.03 and 30,931.17 is: 42,686.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,805.01 : 75,633.03 = 30,931.17 : x
  2. Step 2: Convert to fraction form
    54,805.01/75,633.03 = 30,931.17/x
  3. Step 3: Cross multiply
    54,805.01x = 75,633.03 × 30,931.17
  4. Step 4: Simplify right side
    54,805.01x = 2,339,418,108.55
  5. Step 5: Solve for x
    x = 2,339,418,108.55/54,805.01
  6. Step 6: Final answer
    x = 42,686.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.