Home / 80,717.70-121,076.67-38,587.88

Finding the Fourth Proportional to 80,717.70, 121,076.67 and 38,587.88

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Solution

The fourth proportional to 80,717.70, 121,076.67 and 38,587.88 is: 57,881.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,717.70 : 121,076.67 = 38,587.88 : x
  2. Step 2: Convert to fraction form
    80,717.70/121,076.67 = 38,587.88/x
  3. Step 3: Cross multiply
    80,717.70x = 121,076.67 × 38,587.88
  4. Step 4: Simplify right side
    80,717.70x = 4,672,091,407.38
  5. Step 5: Solve for x
    x = 4,672,091,407.38/80,717.70
  6. Step 6: Final answer
    x = 57,881.87

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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.