Home / 83,731.72-115,434.30-66,793.42

Finding the Fourth Proportional to 83,731.72, 115,434.30 and 66,793.42

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Solution

The fourth proportional to 83,731.72, 115,434.30 and 66,793.42 is: 92,082.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,731.72 : 115,434.30 = 66,793.42 : x
  2. Step 2: Convert to fraction form
    83,731.72/115,434.30 = 66,793.42/x
  3. Step 3: Cross multiply
    83,731.72x = 115,434.30 × 66,793.42
  4. Step 4: Simplify right side
    83,731.72x = 7,710,251,682.31
  5. Step 5: Solve for x
    x = 7,710,251,682.31/83,731.72
  6. Step 6: Final answer
    x = 92,082.81

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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.