Home / 80,719.20-111,331.80-48,848.40

Finding the Fourth Proportional to 80,719.20, 111,331.80 and 48,848.40

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Solution

The fourth proportional to 80,719.20, 111,331.80 and 48,848.40 is: 67,374.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,719.20 : 111,331.80 = 48,848.40 : x
  2. Step 2: Convert to fraction form
    80,719.20/111,331.80 = 48,848.40/x
  3. Step 3: Cross multiply
    80,719.20x = 111,331.80 × 48,848.40
  4. Step 4: Simplify right side
    80,719.20x = 5,438,380,299.12
  5. Step 5: Solve for x
    x = 5,438,380,299.12/80,719.20
  6. Step 6: Final answer
    x = 67,374.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.