Home / 85,279.75-127,949.12-29,159.36

Finding the Fourth Proportional to 85,279.75, 127,949.12 and 29,159.36

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Solution

The fourth proportional to 85,279.75, 127,949.12 and 29,159.36 is: 43,749.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,279.75 : 127,949.12 = 29,159.36 : x
  2. Step 2: Convert to fraction form
    85,279.75/127,949.12 = 29,159.36/x
  3. Step 3: Cross multiply
    85,279.75x = 127,949.12 × 29,159.36
  4. Step 4: Simplify right side
    85,279.75x = 3,730,914,451.76
  5. Step 5: Solve for x
    x = 3,730,914,451.76/85,279.75
  6. Step 6: Final answer
    x = 43,749.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.