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Finding the Fourth Proportional to 83,478.44, 125,079.96 and 61,300.64

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Solution

The fourth proportional to 83,478.44, 125,079.96 and 61,300.64 is: 91,849.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,478.44 : 125,079.96 = 61,300.64 : x
  2. Step 2: Convert to fraction form
    83,478.44/125,079.96 = 61,300.64/x
  3. Step 3: Cross multiply
    83,478.44x = 125,079.96 × 61,300.64
  4. Step 4: Simplify right side
    83,478.44x = 7,667,481,599.17
  5. Step 5: Solve for x
    x = 7,667,481,599.17/83,478.44
  6. Step 6: Final answer
    x = 91,849.84

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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.