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Finding the Fourth Proportional to 55,307.60, 82,951.80 and 20,229.20

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Solution

The fourth proportional to 55,307.60, 82,951.80 and 20,229.20 is: 30,340.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,307.60 : 82,951.80 = 20,229.20 : x
  2. Step 2: Convert to fraction form
    55,307.60/82,951.80 = 20,229.20/x
  3. Step 3: Cross multiply
    55,307.60x = 82,951.80 × 20,229.20
  4. Step 4: Simplify right side
    55,307.60x = 1,678,048,552.56
  5. Step 5: Solve for x
    x = 1,678,048,552.56/55,307.60
  6. Step 6: Final answer
    x = 30,340.29

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1.5x scale

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.