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Finding the Fourth Proportional to 81,758.52, 112,836.12 and 45,463.58

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Solution

The fourth proportional to 81,758.52, 112,836.12 and 45,463.58 is: 62,744.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,758.52 : 112,836.12 = 45,463.58 : x
  2. Step 2: Convert to fraction form
    81,758.52/112,836.12 = 45,463.58/x
  3. Step 3: Cross multiply
    81,758.52x = 112,836.12 × 45,463.58
  4. Step 4: Simplify right side
    81,758.52x = 5,129,933,968.51
  5. Step 5: Solve for x
    x = 5,129,933,968.51/81,758.52
  6. Step 6: Final answer
    x = 62,744.95

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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.