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Finding the Fourth Proportional to 85,330.70, 127,704.45 and 74,833.10

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Solution

The fourth proportional to 85,330.70, 127,704.45 and 74,833.10 is: 111,993.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,330.70 : 127,704.45 = 74,833.10 : x
  2. Step 2: Convert to fraction form
    85,330.70/127,704.45 = 74,833.10/x
  3. Step 3: Cross multiply
    85,330.70x = 127,704.45 × 74,833.10
  4. Step 4: Simplify right side
    85,330.70x = 9,556,519,877.30
  5. Step 5: Solve for x
    x = 9,556,519,877.30/85,330.70
  6. Step 6: Final answer
    x = 111,993.92

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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.