Home / 54,372.05-81,530.40-21,101.66

Finding the Fourth Proportional to 54,372.05, 81,530.40 and 21,101.66

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Solution

The fourth proportional to 54,372.05, 81,530.40 and 21,101.66 is: 31,641.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,372.05 : 81,530.40 = 21,101.66 : x
  2. Step 2: Convert to fraction form
    54,372.05/81,530.40 = 21,101.66/x
  3. Step 3: Cross multiply
    54,372.05x = 81,530.40 × 21,101.66
  4. Step 4: Simplify right side
    54,372.05x = 1,720,426,780.46
  5. Step 5: Solve for x
    x = 1,720,426,780.46/54,372.05
  6. Step 6: Final answer
    x = 31,641.75

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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.