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Finding the Fourth Proportional to 81,444.52, 112,392 and 45,634.42

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Solution

The fourth proportional to 81,444.52, 112,392 and 45,634.42 is: 62,974.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,444.52 : 112,392 = 45,634.42 : x
  2. Step 2: Convert to fraction form
    81,444.52/112,392 = 45,634.42/x
  3. Step 3: Cross multiply
    81,444.52x = 112,392 × 45,634.42
  4. Step 4: Simplify right side
    81,444.52x = 5,128,943,732.64
  5. Step 5: Solve for x
    x = 5,128,943,732.64/81,444.52
  6. Step 6: Final answer
    x = 62,974.69

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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.