Home / 80,654.32-121,016.16-28,035.12

Finding the Fourth Proportional to 80,654.32, 121,016.16 and 28,035.12

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Solution

The fourth proportional to 80,654.32, 121,016.16 and 28,035.12 is: 42,064.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,654.32 : 121,016.16 = 28,035.12 : x
  2. Step 2: Convert to fraction form
    80,654.32/121,016.16 = 28,035.12/x
  3. Step 3: Cross multiply
    80,654.32x = 121,016.16 × 28,035.12
  4. Step 4: Simplify right side
    80,654.32x = 3,392,702,567.54
  5. Step 5: Solve for x
    x = 3,392,702,567.54/80,654.32
  6. Step 6: Final answer
    x = 42,064.73

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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.