Home / 81,189.42-112,046.64-45,380.94

Finding the Fourth Proportional to 81,189.42, 112,046.64 and 45,380.94

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Solution

The fourth proportional to 81,189.42, 112,046.64 and 45,380.94 is: 62,628.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,189.42 : 112,046.64 = 45,380.94 : x
  2. Step 2: Convert to fraction form
    81,189.42/112,046.64 = 45,380.94/x
  3. Step 3: Cross multiply
    81,189.42x = 112,046.64 × 45,380.94
  4. Step 4: Simplify right side
    81,189.42x = 5,084,781,847.04
  5. Step 5: Solve for x
    x = 5,084,781,847.04/81,189.42
  6. Step 6: Final answer
    x = 62,628.63

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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.