Home / 81,456.13-112,409.45-49,625

Finding the Fourth Proportional to 81,456.13, 112,409.45 and 49,625

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Solution

The fourth proportional to 81,456.13, 112,409.45 and 49,625 is: 68,482.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,456.13 : 112,409.45 = 49,625 : x
  2. Step 2: Convert to fraction form
    81,456.13/112,409.45 = 49,625/x
  3. Step 3: Cross multiply
    81,456.13x = 112,409.45 × 49,625
  4. Step 4: Simplify right side
    81,456.13x = 5,578,318,956.25
  5. Step 5: Solve for x
    x = 5,578,318,956.25/81,456.13
  6. Step 6: Final answer
    x = 68,482.49

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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.