Home / 81,279.70-112,166.14-45,470.30

Finding the Fourth Proportional to 81,279.70, 112,166.14 and 45,470.30

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Solution

The fourth proportional to 81,279.70, 112,166.14 and 45,470.30 is: 62,749.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,279.70 : 112,166.14 = 45,470.30 : x
  2. Step 2: Convert to fraction form
    81,279.70/112,166.14 = 45,470.30/x
  3. Step 3: Cross multiply
    81,279.70x = 112,166.14 × 45,470.30
  4. Step 4: Simplify right side
    81,279.70x = 5,100,228,035.64
  5. Step 5: Solve for x
    x = 5,100,228,035.64/81,279.70
  6. Step 6: Final answer
    x = 62,749.10

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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.