Home / 80,801.71-121,202.61-38,671.89

Finding the Fourth Proportional to 80,801.71, 121,202.61 and 38,671.89

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Solution

The fourth proportional to 80,801.71, 121,202.61 and 38,671.89 is: 58,007.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,801.71 : 121,202.61 = 38,671.89 : x
  2. Step 2: Convert to fraction form
    80,801.71/121,202.61 = 38,671.89/x
  3. Step 3: Cross multiply
    80,801.71x = 121,202.61 × 38,671.89
  4. Step 4: Simplify right side
    80,801.71x = 4,687,134,001.63
  5. Step 5: Solve for x
    x = 4,687,134,001.63/80,801.71
  6. Step 6: Final answer
    x = 58,007.86

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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.