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Finding the Fourth Proportional to 83,321.56, 115,037.40 and 74,353.64

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Solution

The fourth proportional to 83,321.56, 115,037.40 and 74,353.64 is: 102,655.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,321.56 : 115,037.40 = 74,353.64 : x
  2. Step 2: Convert to fraction form
    83,321.56/115,037.40 = 74,353.64/x
  3. Step 3: Cross multiply
    83,321.56x = 115,037.40 × 74,353.64
  4. Step 4: Simplify right side
    83,321.56x = 8,553,449,426.14
  5. Step 5: Solve for x
    x = 8,553,449,426.14/83,321.56
  6. Step 6: Final answer
    x = 102,655.90

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1.5x scale

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.