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Finding the Fourth Proportional to 82,754.62, 124,058.10 and 68,828.89

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Solution

The fourth proportional to 82,754.62, 124,058.10 and 68,828.89 is: 103,181.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,754.62 : 124,058.10 = 68,828.89 : x
  2. Step 2: Convert to fraction form
    82,754.62/124,058.10 = 68,828.89/x
  3. Step 3: Cross multiply
    82,754.62x = 124,058.10 × 68,828.89
  4. Step 4: Simplify right side
    82,754.62x = 8,538,781,318.51
  5. Step 5: Solve for x
    x = 8,538,781,318.51/82,754.62
  6. Step 6: Final answer
    x = 103,181.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.