Home / 81,455.13-112,408.07-49,624

Finding the Fourth Proportional to 81,455.13, 112,408.07 and 49,624

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Solution

The fourth proportional to 81,455.13, 112,408.07 and 49,624 is: 68,481.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,455.13 : 112,408.07 = 49,624 : x
  2. Step 2: Convert to fraction form
    81,455.13/112,408.07 = 49,624/x
  3. Step 3: Cross multiply
    81,455.13x = 112,408.07 × 49,624
  4. Step 4: Simplify right side
    81,455.13x = 5,578,138,065.68
  5. Step 5: Solve for x
    x = 5,578,138,065.68/81,455.13
  6. Step 6: Final answer
    x = 68,481.11

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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.