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Finding the Fourth Proportional to 109,270.32, 150,793.56 and 61,530

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Solution

The fourth proportional to 109,270.32, 150,793.56 and 61,530 is: 84,911.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,270.32 : 150,793.56 = 61,530 : x
  2. Step 2: Convert to fraction form
    109,270.32/150,793.56 = 61,530/x
  3. Step 3: Cross multiply
    109,270.32x = 150,793.56 × 61,530
  4. Step 4: Simplify right side
    109,270.32x = 9,278,327,746.80
  5. Step 5: Solve for x
    x = 9,278,327,746.80/109,270.32
  6. Step 6: Final answer
    x = 84,911.69

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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.