Home / 81,725.80-112,792.89-45,918.49

Finding the Fourth Proportional to 81,725.80, 112,792.89 and 45,918.49

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Solution

The fourth proportional to 81,725.80, 112,792.89 and 45,918.49 is: 63,373.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,725.80 : 112,792.89 = 45,918.49 : x
  2. Step 2: Convert to fraction form
    81,725.80/112,792.89 = 45,918.49/x
  3. Step 3: Cross multiply
    81,725.80x = 112,792.89 × 45,918.49
  4. Step 4: Simplify right side
    81,725.80x = 5,179,279,191.54
  5. Step 5: Solve for x
    x = 5,179,279,191.54/81,725.80
  6. Step 6: Final answer
    x = 63,373.86

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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.