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Finding the Fourth Proportional to 84,856.64, 127,080.48 and 49,691.84

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Solution

The fourth proportional to 84,856.64, 127,080.48 and 49,691.84 is: 74,418.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,856.64 : 127,080.48 = 49,691.84 : x
  2. Step 2: Convert to fraction form
    84,856.64/127,080.48 = 49,691.84/x
  3. Step 3: Cross multiply
    84,856.64x = 127,080.48 × 49,691.84
  4. Step 4: Simplify right side
    84,856.64x = 6,314,862,879.28
  5. Step 5: Solve for x
    x = 6,314,862,879.28/84,856.64
  6. Step 6: Final answer
    x = 74,418.02

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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.