Home / 81,279.20-112,165.46-45,469.81

Finding the Fourth Proportional to 81,279.20, 112,165.46 and 45,469.81

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Solution

The fourth proportional to 81,279.20, 112,165.46 and 45,469.81 is: 62,748.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,279.20 : 112,165.46 = 45,469.81 : x
  2. Step 2: Convert to fraction form
    81,279.20/112,165.46 = 45,469.81/x
  3. Step 3: Cross multiply
    81,279.20x = 112,165.46 × 45,469.81
  4. Step 4: Simplify right side
    81,279.20x = 5,100,141,366.59
  5. Step 5: Solve for x
    x = 5,100,141,366.59/81,279.20
  6. Step 6: Final answer
    x = 62,748.42

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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.