Home / 80,776.04-121,155.42-28,186.52

Finding the Fourth Proportional to 80,776.04, 121,155.42 and 28,186.52

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Solution

The fourth proportional to 80,776.04, 121,155.42 and 28,186.52 is: 42,276.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,776.04 : 121,155.42 = 28,186.52 : x
  2. Step 2: Convert to fraction form
    80,776.04/121,155.42 = 28,186.52/x
  3. Step 3: Cross multiply
    80,776.04x = 121,155.42 × 28,186.52
  4. Step 4: Simplify right side
    80,776.04x = 3,414,949,668.94
  5. Step 5: Solve for x
    x = 3,414,949,668.94/80,776.04
  6. Step 6: Final answer
    x = 42,276.77

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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.