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Finding the Fourth Proportional to 55,250.40, 82,911.90 and 30,307.92

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Solution

The fourth proportional to 55,250.40, 82,911.90 and 30,307.92 is: 45,481.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,250.40 : 82,911.90 = 30,307.92 : x
  2. Step 2: Convert to fraction form
    55,250.40/82,911.90 = 30,307.92/x
  3. Step 3: Cross multiply
    55,250.40x = 82,911.90 × 30,307.92
  4. Step 4: Simplify right side
    55,250.40x = 2,512,887,232.25
  5. Step 5: Solve for x
    x = 2,512,887,232.25/55,250.40
  6. Step 6: Final answer
    x = 45,481.79

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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.