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Finding the Fourth Proportional to 35,479.97, 53,230.22 and 10,520.49

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Solution

The fourth proportional to 35,479.97, 53,230.22 and 10,520.49 is: 15,783.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,479.97 : 53,230.22 = 10,520.49 : x
  2. Step 2: Convert to fraction form
    35,479.97/53,230.22 = 10,520.49/x
  3. Step 3: Cross multiply
    35,479.97x = 53,230.22 × 10,520.49
  4. Step 4: Simplify right side
    35,479.97x = 560,007,944.61
  5. Step 5: Solve for x
    x = 560,007,944.61/35,479.97
  6. Step 6: Final answer
    x = 15,783.78

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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.