Home / 80,875.26-121,329.29-28,321.65

Finding the Fourth Proportional to 80,875.26, 121,329.29 and 28,321.65

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Solution

The fourth proportional to 80,875.26, 121,329.29 and 28,321.65 is: 42,488.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,875.26 : 121,329.29 = 28,321.65 : x
  2. Step 2: Convert to fraction form
    80,875.26/121,329.29 = 28,321.65/x
  3. Step 3: Cross multiply
    80,875.26x = 121,329.29 × 28,321.65
  4. Step 4: Simplify right side
    80,875.26x = 3,436,245,756.93
  5. Step 5: Solve for x
    x = 3,436,245,756.93/80,875.26
  6. Step 6: Final answer
    x = 42,488.22

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1.5x scale

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.