Home / 80,974.71-121,516.27-28,384.17

Finding the Fourth Proportional to 80,974.71, 121,516.27 and 28,384.17

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Solution

The fourth proportional to 80,974.71, 121,516.27 and 28,384.17 is: 42,595.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,974.71 : 121,516.27 = 28,384.17 : x
  2. Step 2: Convert to fraction form
    80,974.71/121,516.27 = 28,384.17/x
  3. Step 3: Cross multiply
    80,974.71x = 121,516.27 × 28,384.17
  4. Step 4: Simplify right side
    80,974.71x = 3,449,138,465.45
  5. Step 5: Solve for x
    x = 3,449,138,465.45/80,974.71
  6. Step 6: Final answer
    x = 42,595.26

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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.