Home / 81,085.50-111,909.22-45,277.84

Finding the Fourth Proportional to 81,085.50, 111,909.22 and 45,277.84

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Solution

The fourth proportional to 81,085.50, 111,909.22 and 45,277.84 is: 62,489.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,085.50 : 111,909.22 = 45,277.84 : x
  2. Step 2: Convert to fraction form
    81,085.50/111,909.22 = 45,277.84/x
  3. Step 3: Cross multiply
    81,085.50x = 111,909.22 × 45,277.84
  4. Step 4: Simplify right side
    81,085.50x = 5,067,007,757.68
  5. Step 5: Solve for x
    x = 5,067,007,757.68/81,085.50
  6. Step 6: Final answer
    x = 62,489.69

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1.5x scale

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.