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Finding the Fourth Proportional to 81,658.08, 112,700.48 and 49,845.48

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Solution

The fourth proportional to 81,658.08, 112,700.48 and 49,845.48 is: 68,794.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,658.08 : 112,700.48 = 49,845.48 : x
  2. Step 2: Convert to fraction form
    81,658.08/112,700.48 = 49,845.48/x
  3. Step 3: Cross multiply
    81,658.08x = 112,700.48 × 49,845.48
  4. Step 4: Simplify right side
    81,658.08x = 5,617,609,521.83
  5. Step 5: Solve for x
    x = 5,617,609,521.83/81,658.08
  6. Step 6: Final answer
    x = 68,794.29

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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.