Home / 80,639.28-121,013.96-28,048.24

Finding the Fourth Proportional to 80,639.28, 121,013.96 and 28,048.24

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Solution

The fourth proportional to 80,639.28, 121,013.96 and 28,048.24 is: 42,091.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,639.28 : 121,013.96 = 28,048.24 : x
  2. Step 2: Convert to fraction form
    80,639.28/121,013.96 = 28,048.24/x
  3. Step 3: Cross multiply
    80,639.28x = 121,013.96 × 28,048.24
  4. Step 4: Simplify right side
    80,639.28x = 3,394,228,593.43
  5. Step 5: Solve for x
    x = 3,394,228,593.43/80,639.28
  6. Step 6: Final answer
    x = 42,091.50

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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.