Home / 81,974.62-112,886.76-71,214.58

Finding the Fourth Proportional to 81,974.62, 112,886.76 and 71,214.58

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Solution

The fourth proportional to 81,974.62, 112,886.76 and 71,214.58 is: 98,069.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,974.62 : 112,886.76 = 71,214.58 : x
  2. Step 2: Convert to fraction form
    81,974.62/112,886.76 = 71,214.58/x
  3. Step 3: Cross multiply
    81,974.62x = 112,886.76 × 71,214.58
  4. Step 4: Simplify right side
    81,974.62x = 8,039,183,200.96
  5. Step 5: Solve for x
    x = 8,039,183,200.96/81,974.62
  6. Step 6: Final answer
    x = 98,069.17

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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.