Home / 81,758.57-112,821.66-45,948.06

Finding the Fourth Proportional to 81,758.57, 112,821.66 and 45,948.06

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Solution

The fourth proportional to 81,758.57, 112,821.66 and 45,948.06 is: 63,405.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,758.57 : 112,821.66 = 45,948.06 : x
  2. Step 2: Convert to fraction form
    81,758.57/112,821.66 = 45,948.06/x
  3. Step 3: Cross multiply
    81,758.57x = 112,821.66 × 45,948.06
  4. Step 4: Simplify right side
    81,758.57x = 5,183,936,402.98
  5. Step 5: Solve for x
    x = 5,183,936,402.98/81,758.57
  6. Step 6: Final answer
    x = 63,405.42

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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.