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Finding the Fourth Proportional to 71,967.87, 108,045.35 and 55,339.58

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Solution

The fourth proportional to 71,967.87, 108,045.35 and 55,339.58 is: 83,081.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,967.87 : 108,045.35 = 55,339.58 : x
  2. Step 2: Convert to fraction form
    71,967.87/108,045.35 = 55,339.58/x
  3. Step 3: Cross multiply
    71,967.87x = 108,045.35 × 55,339.58
  4. Step 4: Simplify right side
    71,967.87x = 5,979,183,536.65
  5. Step 5: Solve for x
    x = 5,979,183,536.65/71,967.87
  6. Step 6: Final answer
    x = 83,081.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.