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Finding the Fourth Proportional to 73,493.80, 110,240.70 and 20,896.45

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Solution

The fourth proportional to 73,493.80, 110,240.70 and 20,896.45 is: 31,344.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,493.80 : 110,240.70 = 20,896.45 : x
  2. Step 2: Convert to fraction form
    73,493.80/110,240.70 = 20,896.45/x
  3. Step 3: Cross multiply
    73,493.80x = 110,240.70 × 20,896.45
  4. Step 4: Simplify right side
    73,493.80x = 2,303,639,275.52
  5. Step 5: Solve for x
    x = 2,303,639,275.52/73,493.80
  6. Step 6: Final answer
    x = 31,344.68

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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.