Home / 80,722.43-121,083.74-38,592.60

Finding the Fourth Proportional to 80,722.43, 121,083.74 and 38,592.60

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Solution

The fourth proportional to 80,722.43, 121,083.74 and 38,592.60 is: 57,888.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,722.43 : 121,083.74 = 38,592.60 : x
  2. Step 2: Convert to fraction form
    80,722.43/121,083.74 = 38,592.60/x
  3. Step 3: Cross multiply
    80,722.43x = 121,083.74 × 38,592.60
  4. Step 4: Simplify right side
    80,722.43x = 4,672,936,151.36
  5. Step 5: Solve for x
    x = 4,672,936,151.36/80,722.43
  6. Step 6: Final answer
    x = 57,888.95

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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.