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Finding the Fourth Proportional to 55,211.76, 82,806 and 17,775.18

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Solution

The fourth proportional to 55,211.76, 82,806 and 17,775.18 is: 26,659.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,211.76 : 82,806 = 17,775.18 : x
  2. Step 2: Convert to fraction form
    55,211.76/82,806 = 17,775.18/x
  3. Step 3: Cross multiply
    55,211.76x = 82,806 × 17,775.18
  4. Step 4: Simplify right side
    55,211.76x = 1,471,891,555.08
  5. Step 5: Solve for x
    x = 1,471,891,555.08/55,211.76
  6. Step 6: Final answer
    x = 26,659.02

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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.