Home / 81,679.04-112,729.28-49,866.42

Finding the Fourth Proportional to 81,679.04, 112,729.28 and 49,866.42

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Solution

The fourth proportional to 81,679.04, 112,729.28 and 49,866.42 is: 68,823.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,679.04 : 112,729.28 = 49,866.42 : x
  2. Step 2: Convert to fraction form
    81,679.04/112,729.28 = 49,866.42/x
  3. Step 3: Cross multiply
    81,679.04x = 112,729.28 × 49,866.42
  4. Step 4: Simplify right side
    81,679.04x = 5,621,405,622.78
  5. Step 5: Solve for x
    x = 5,621,405,622.78/81,679.04
  6. Step 6: Final answer
    x = 68,823.11

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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.