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Finding the Fourth Proportional to 84,715.80, 127,049.40 and 25,537.20

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Solution

The fourth proportional to 84,715.80, 127,049.40 and 25,537.20 is: 38,298.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,715.80 : 127,049.40 = 25,537.20 : x
  2. Step 2: Convert to fraction form
    84,715.80/127,049.40 = 25,537.20/x
  3. Step 3: Cross multiply
    84,715.80x = 127,049.40 × 25,537.20
  4. Step 4: Simplify right side
    84,715.80x = 3,244,485,937.68
  5. Step 5: Solve for x
    x = 3,244,485,937.68/84,715.80
  6. Step 6: Final answer
    x = 38,298.47

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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.