Home / 80,538.96-111,014.52-54,689.40

Finding the Fourth Proportional to 80,538.96, 111,014.52 and 54,689.40

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Solution

The fourth proportional to 80,538.96, 111,014.52 and 54,689.40 is: 75,383.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,538.96 : 111,014.52 = 54,689.40 : x
  2. Step 2: Convert to fraction form
    80,538.96/111,014.52 = 54,689.40/x
  3. Step 3: Cross multiply
    80,538.96x = 111,014.52 × 54,689.40
  4. Step 4: Simplify right side
    80,538.96x = 6,071,317,490.09
  5. Step 5: Solve for x
    x = 6,071,317,490.09/80,538.96
  6. Step 6: Final answer
    x = 75,383.61

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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.