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Finding the Fourth Proportional to 84,858.74, 127,288.14 and 25,694.30

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Solution

The fourth proportional to 84,858.74, 127,288.14 and 25,694.30 is: 38,541.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,858.74 : 127,288.14 = 25,694.30 : x
  2. Step 2: Convert to fraction form
    84,858.74/127,288.14 = 25,694.30/x
  3. Step 3: Cross multiply
    84,858.74x = 127,288.14 × 25,694.30
  4. Step 4: Simplify right side
    84,858.74x = 3,270,579,655.60
  5. Step 5: Solve for x
    x = 3,270,579,655.60/84,858.74
  6. Step 6: Final answer
    x = 38,541.46

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Similar ratio
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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.