Home / 81,066.78-111,876.64-45,257.08

Finding the Fourth Proportional to 81,066.78, 111,876.64 and 45,257.08

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Solution

The fourth proportional to 81,066.78, 111,876.64 and 45,257.08 is: 62,457.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,066.78 : 111,876.64 = 45,257.08 : x
  2. Step 2: Convert to fraction form
    81,066.78/111,876.64 = 45,257.08/x
  3. Step 3: Cross multiply
    81,066.78x = 111,876.64 × 45,257.08
  4. Step 4: Simplify right side
    81,066.78x = 5,063,210,046.61
  5. Step 5: Solve for x
    x = 5,063,210,046.61/81,066.78
  6. Step 6: Final answer
    x = 62,457.27

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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.