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Finding the Fourth Proportional to 99,967.78, 150,025.50 and 47,377.42

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Solution

The fourth proportional to 99,967.78, 150,025.50 and 47,377.42 is: 71,101.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,967.78 : 150,025.50 = 47,377.42 : x
  2. Step 2: Convert to fraction form
    99,967.78/150,025.50 = 47,377.42/x
  3. Step 3: Cross multiply
    99,967.78x = 150,025.50 × 47,377.42
  4. Step 4: Simplify right side
    99,967.78x = 7,107,821,124.21
  5. Step 5: Solve for x
    x = 7,107,821,124.21/99,967.78
  6. Step 6: Final answer
    x = 71,101.12

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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.