Home / 81,817.17-112,912.32-54,546.20

Finding the Fourth Proportional to 81,817.17, 112,912.32 and 54,546.20

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Solution

The fourth proportional to 81,817.17, 112,912.32 and 54,546.20 is: 75,276.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,817.17 : 112,912.32 = 54,546.20 : x
  2. Step 2: Convert to fraction form
    81,817.17/112,912.32 = 54,546.20/x
  3. Step 3: Cross multiply
    81,817.17x = 112,912.32 × 54,546.20
  4. Step 4: Simplify right side
    81,817.17x = 6,158,937,424.62
  5. Step 5: Solve for x
    x = 6,158,937,424.62/81,817.17
  6. Step 6: Final answer
    x = 75,276.83

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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.