Home / 54,740.75-82,111.13-13,187.75

Finding the Fourth Proportional to 54,740.75, 82,111.13 and 13,187.75

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Solution

The fourth proportional to 54,740.75, 82,111.13 and 13,187.75 is: 19,781.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,740.75 : 82,111.13 = 13,187.75 : x
  2. Step 2: Convert to fraction form
    54,740.75/82,111.13 = 13,187.75/x
  3. Step 3: Cross multiply
    54,740.75x = 82,111.13 × 13,187.75
  4. Step 4: Simplify right side
    54,740.75x = 1,082,861,292.90
  5. Step 5: Solve for x
    x = 1,082,861,292.90/54,740.75
  6. Step 6: Final answer
    x = 19,781.63

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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.