Home / 80,933.96-121,455.48-28,343.90

Finding the Fourth Proportional to 80,933.96, 121,455.48 and 28,343.90

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Solution

The fourth proportional to 80,933.96, 121,455.48 and 28,343.90 is: 42,534.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,933.96 : 121,455.48 = 28,343.90 : x
  2. Step 2: Convert to fraction form
    80,933.96/121,455.48 = 28,343.90/x
  3. Step 3: Cross multiply
    80,933.96x = 121,455.48 × 28,343.90
  4. Step 4: Simplify right side
    80,933.96x = 3,442,521,979.57
  5. Step 5: Solve for x
    x = 3,442,521,979.57/80,933.96
  6. Step 6: Final answer
    x = 42,534.95

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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.