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Finding the Fourth Proportional to 85,037.36, 127,574.49 and 25,871.49

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Solution

The fourth proportional to 85,037.36, 127,574.49 and 25,871.49 is: 38,812.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,037.36 : 127,574.49 = 25,871.49 : x
  2. Step 2: Convert to fraction form
    85,037.36/127,574.49 = 25,871.49/x
  3. Step 3: Cross multiply
    85,037.36x = 127,574.49 × 25,871.49
  4. Step 4: Simplify right side
    85,037.36x = 3,300,541,375.06
  5. Step 5: Solve for x
    x = 3,300,541,375.06/85,037.36
  6. Step 6: Final answer
    x = 38,812.84

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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.