Home / 81,279.05-112,169.32-45,469.66

Finding the Fourth Proportional to 81,279.05, 112,169.32 and 45,469.66

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Solution

The fourth proportional to 81,279.05, 112,169.32 and 45,469.66 is: 62,750.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,279.05 : 112,169.32 = 45,469.66 : x
  2. Step 2: Convert to fraction form
    81,279.05/112,169.32 = 45,469.66/x
  3. Step 3: Cross multiply
    81,279.05x = 112,169.32 × 45,469.66
  4. Step 4: Simplify right side
    81,279.05x = 5,100,300,842.83
  5. Step 5: Solve for x
    x = 5,100,300,842.83/81,279.05
  6. Step 6: Final answer
    x = 62,750.50

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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.