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Finding the Fourth Proportional to 79,148.54, 109,230.32 and 45,163.78

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Solution

The fourth proportional to 79,148.54, 109,230.32 and 45,163.78 is: 62,329.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,148.54 : 109,230.32 = 45,163.78 : x
  2. Step 2: Convert to fraction form
    79,148.54/109,230.32 = 45,163.78/x
  3. Step 3: Cross multiply
    79,148.54x = 109,230.32 × 45,163.78
  4. Step 4: Simplify right side
    79,148.54x = 4,933,253,981.64
  5. Step 5: Solve for x
    x = 4,933,253,981.64/79,148.54
  6. Step 6: Final answer
    x = 62,329.06

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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.