Home / 80,719.43-121,106.39-35,734.58

Finding the Fourth Proportional to 80,719.43, 121,106.39 and 35,734.58

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Solution

The fourth proportional to 80,719.43, 121,106.39 and 35,734.58 is: 53,613.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,719.43 : 121,106.39 = 35,734.58 : x
  2. Step 2: Convert to fraction form
    80,719.43/121,106.39 = 35,734.58/x
  3. Step 3: Cross multiply
    80,719.43x = 121,106.39 × 35,734.58
  4. Step 4: Simplify right side
    80,719.43x = 4,327,685,981.97
  5. Step 5: Solve for x
    x = 4,327,685,981.97/80,719.43
  6. Step 6: Final answer
    x = 53,613.93

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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.