Home / 80,947.52-121,420.72-21,778.24

Finding the Fourth Proportional to 80,947.52, 121,420.72 and 21,778.24

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Solution

The fourth proportional to 80,947.52, 121,420.72 and 21,778.24 is: 32,667.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,947.52 : 121,420.72 = 21,778.24 : x
  2. Step 2: Convert to fraction form
    80,947.52/121,420.72 = 21,778.24/x
  3. Step 3: Cross multiply
    80,947.52x = 121,420.72 × 21,778.24
  4. Step 4: Simplify right side
    80,947.52x = 2,644,329,581.13
  5. Step 5: Solve for x
    x = 2,644,329,581.13/80,947.52
  6. Step 6: Final answer
    x = 32,667.21

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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.