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Finding the Fourth Proportional to 81,374.98, 112,291.56 and 49,554.13

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Solution

The fourth proportional to 81,374.98, 112,291.56 and 49,554.13 is: 68,381.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,374.98 : 112,291.56 = 49,554.13 : x
  2. Step 2: Convert to fraction form
    81,374.98/112,291.56 = 49,554.13/x
  3. Step 3: Cross multiply
    81,374.98x = 112,291.56 × 49,554.13
  4. Step 4: Simplify right side
    81,374.98x = 5,564,510,562.14
  5. Step 5: Solve for x
    x = 5,564,510,562.14/81,374.98
  6. Step 6: Final answer
    x = 68,381.10

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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.