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Finding the Fourth Proportional to 55,812.78, 83,729.52 and 18,375.12

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Solution

The fourth proportional to 55,812.78, 83,729.52 and 18,375.12 is: 27,566.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,812.78 : 83,729.52 = 18,375.12 : x
  2. Step 2: Convert to fraction form
    55,812.78/83,729.52 = 18,375.12/x
  3. Step 3: Cross multiply
    55,812.78x = 83,729.52 × 18,375.12
  4. Step 4: Simplify right side
    55,812.78x = 1,538,539,977.54
  5. Step 5: Solve for x
    x = 1,538,539,977.54/55,812.78
  6. Step 6: Final answer
    x = 27,566.09

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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.