Home / 83,426.71-125,139-20,247.36

Finding the Fourth Proportional to 83,426.71, 125,139 and 20,247.36

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Solution

The fourth proportional to 83,426.71, 125,139 and 20,247.36 is: 30,370.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,426.71 : 125,139 = 20,247.36 : x
  2. Step 2: Convert to fraction form
    83,426.71/125,139 = 20,247.36/x
  3. Step 3: Cross multiply
    83,426.71x = 125,139 × 20,247.36
  4. Step 4: Simplify right side
    83,426.71x = 2,533,734,383.04
  5. Step 5: Solve for x
    x = 2,533,734,383.04/83,426.71
  6. Step 6: Final answer
    x = 30,370.78

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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.