Home / 81,285.12-112,091.04-49,422.96

Finding the Fourth Proportional to 81,285.12, 112,091.04 and 49,422.96

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Solution

The fourth proportional to 81,285.12, 112,091.04 and 49,422.96 is: 68,153.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,285.12 : 112,091.04 = 49,422.96 : x
  2. Step 2: Convert to fraction form
    81,285.12/112,091.04 = 49,422.96/x
  3. Step 3: Cross multiply
    81,285.12x = 112,091.04 × 49,422.96
  4. Step 4: Simplify right side
    81,285.12x = 5,539,870,986.28
  5. Step 5: Solve for x
    x = 5,539,870,986.28/81,285.12
  6. Step 6: Final answer
    x = 68,153.57

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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.