Home / 85,140.82-127,711.38-25,976.09

Finding the Fourth Proportional to 85,140.82, 127,711.38 and 25,976.09

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Solution

The fourth proportional to 85,140.82, 127,711.38 and 25,976.09 is: 38,964.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,140.82 : 127,711.38 = 25,976.09 : x
  2. Step 2: Convert to fraction form
    85,140.82/127,711.38 = 25,976.09/x
  3. Step 3: Cross multiply
    85,140.82x = 127,711.38 × 25,976.09
  4. Step 4: Simplify right side
    85,140.82x = 3,317,442,717.59
  5. Step 5: Solve for x
    x = 3,317,442,717.59/85,140.82
  6. Step 6: Final answer
    x = 38,964.19

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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.