Home / 81,100.28-111,918.65-45,291.62

Finding the Fourth Proportional to 81,100.28, 111,918.65 and 45,291.62

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Solution

The fourth proportional to 81,100.28, 111,918.65 and 45,291.62 is: 62,502.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,100.28 : 111,918.65 = 45,291.62 : x
  2. Step 2: Convert to fraction form
    81,100.28/111,918.65 = 45,291.62/x
  3. Step 3: Cross multiply
    81,100.28x = 111,918.65 × 45,291.62
  4. Step 4: Simplify right side
    81,100.28x = 5,068,976,180.66
  5. Step 5: Solve for x
    x = 5,068,976,180.66/81,100.28
  6. Step 6: Final answer
    x = 62,502.58

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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.