Home / 80,906.32-121,355.70-28,327.60

Finding the Fourth Proportional to 80,906.32, 121,355.70 and 28,327.60

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Solution

The fourth proportional to 80,906.32, 121,355.70 and 28,327.60 is: 42,490.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,906.32 : 121,355.70 = 28,327.60 : x
  2. Step 2: Convert to fraction form
    80,906.32/121,355.70 = 28,327.60/x
  3. Step 3: Cross multiply
    80,906.32x = 121,355.70 × 28,327.60
  4. Step 4: Simplify right side
    80,906.32x = 3,437,715,727.32
  5. Step 5: Solve for x
    x = 3,437,715,727.32/80,906.32
  6. Step 6: Final answer
    x = 42,490.08

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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.