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Finding the Fourth Proportional to 84,892.70, 127,339.05 and 40,540.70

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Solution

The fourth proportional to 84,892.70, 127,339.05 and 40,540.70 is: 60,811.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,892.70 : 127,339.05 = 40,540.70 : x
  2. Step 2: Convert to fraction form
    84,892.70/127,339.05 = 40,540.70/x
  3. Step 3: Cross multiply
    84,892.70x = 127,339.05 × 40,540.70
  4. Step 4: Simplify right side
    84,892.70x = 5,162,414,224.34
  5. Step 5: Solve for x
    x = 5,162,414,224.34/84,892.70
  6. Step 6: Final answer
    x = 60,811.05

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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.