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Finding the Fourth Proportional to 55,170.60, 82,747.70 and 20,102.08

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Solution

The fourth proportional to 55,170.60, 82,747.70 and 20,102.08 is: 30,150.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,170.60 : 82,747.70 = 20,102.08 : x
  2. Step 2: Convert to fraction form
    55,170.60/82,747.70 = 20,102.08/x
  3. Step 3: Cross multiply
    55,170.60x = 82,747.70 × 20,102.08
  4. Step 4: Simplify right side
    55,170.60x = 1,663,400,885.22
  5. Step 5: Solve for x
    x = 1,663,400,885.22/55,170.60
  6. Step 6: Final answer
    x = 30,150.13

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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.