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Finding the Fourth Proportional to 97,863.80, 135,047.52 and 55,422.64

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Solution

The fourth proportional to 97,863.80, 135,047.52 and 55,422.64 is: 76,480.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,863.80 : 135,047.52 = 55,422.64 : x
  2. Step 2: Convert to fraction form
    97,863.80/135,047.52 = 55,422.64/x
  3. Step 3: Cross multiply
    97,863.80x = 135,047.52 × 55,422.64
  4. Step 4: Simplify right side
    97,863.80x = 7,484,690,083.85
  5. Step 5: Solve for x
    x = 7,484,690,083.85/97,863.80
  6. Step 6: Final answer
    x = 76,480.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.