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Finding the Fourth Proportional to 74,751.50, 103,036.78 and 54,576.42

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Solution

The fourth proportional to 74,751.50, 103,036.78 and 54,576.42 is: 75,227.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,751.50 : 103,036.78 = 54,576.42 : x
  2. Step 2: Convert to fraction form
    74,751.50/103,036.78 = 54,576.42/x
  3. Step 3: Cross multiply
    74,751.50x = 103,036.78 × 54,576.42
  4. Step 4: Simplify right side
    74,751.50x = 5,623,378,580.73
  5. Step 5: Solve for x
    x = 5,623,378,580.73/74,751.50
  6. Step 6: Final answer
    x = 75,227.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.