Home / 81,119.91-111,944.84-47,148.29

Finding the Fourth Proportional to 81,119.91, 111,944.84 and 47,148.29

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Solution

The fourth proportional to 81,119.91, 111,944.84 and 47,148.29 is: 65,064.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,119.91 : 111,944.84 = 47,148.29 : x
  2. Step 2: Convert to fraction form
    81,119.91/111,944.84 = 47,148.29/x
  3. Step 3: Cross multiply
    81,119.91x = 111,944.84 × 47,148.29
  4. Step 4: Simplify right side
    81,119.91x = 5,278,006,984.86
  5. Step 5: Solve for x
    x = 5,278,006,984.86/81,119.91
  6. Step 6: Final answer
    x = 65,064.26

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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.