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Finding the Fourth Proportional to 74,516.62, 102,780.89 and 50,601.78

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Solution

The fourth proportional to 74,516.62, 102,780.89 and 50,601.78 is: 69,795.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,516.62 : 102,780.89 = 50,601.78 : x
  2. Step 2: Convert to fraction form
    74,516.62/102,780.89 = 50,601.78/x
  3. Step 3: Cross multiply
    74,516.62x = 102,780.89 × 50,601.78
  4. Step 4: Simplify right side
    74,516.62x = 5,200,895,217.07
  5. Step 5: Solve for x
    x = 5,200,895,217.07/74,516.62
  6. Step 6: Final answer
    x = 69,795.10

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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.