Home / 54,390.72-75,052.08-30,517.28

Finding the Fourth Proportional to 54,390.72, 75,052.08 and 30,517.28

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Solution

The fourth proportional to 54,390.72, 75,052.08 and 30,517.28 is: 42,109.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,390.72 : 75,052.08 = 30,517.28 : x
  2. Step 2: Convert to fraction form
    54,390.72/75,052.08 = 30,517.28/x
  3. Step 3: Cross multiply
    54,390.72x = 75,052.08 × 30,517.28
  4. Step 4: Simplify right side
    54,390.72x = 2,290,385,339.94
  5. Step 5: Solve for x
    x = 2,290,385,339.94/54,390.72
  6. Step 6: Final answer
    x = 42,109.86

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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.