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Finding the Fourth Proportional to 81,625.67, 112,648.42 and 45,815.68

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Solution

The fourth proportional to 81,625.67, 112,648.42 and 45,815.68 is: 63,228.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,625.67 : 112,648.42 = 45,815.68 : x
  2. Step 2: Convert to fraction form
    81,625.67/112,648.42 = 45,815.68/x
  3. Step 3: Cross multiply
    81,625.67x = 112,648.42 × 45,815.68
  4. Step 4: Simplify right side
    81,625.67x = 5,161,063,963.23
  5. Step 5: Solve for x
    x = 5,161,063,963.23/81,625.67
  6. Step 6: Final answer
    x = 63,228.44

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1.5x scale

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.