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Finding the Fourth Proportional to 85,140.92, 127,711.01 and 25,976.39

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Solution

The fourth proportional to 85,140.92, 127,711.01 and 25,976.39 is: 38,964.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,140.92 : 127,711.01 = 25,976.39 : x
  2. Step 2: Convert to fraction form
    85,140.92/127,711.01 = 25,976.39/x
  3. Step 3: Cross multiply
    85,140.92x = 127,711.01 × 25,976.39
  4. Step 4: Simplify right side
    85,140.92x = 3,317,470,429.44
  5. Step 5: Solve for x
    x = 3,317,470,429.44/85,140.92
  6. Step 6: Final answer
    x = 38,964.46

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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.