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Finding the Fourth Proportional to 73,708.82, 110,563.26 and 21,118.52

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Solution

The fourth proportional to 73,708.82, 110,563.26 and 21,118.52 is: 31,677.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,708.82 : 110,563.26 = 21,118.52 : x
  2. Step 2: Convert to fraction form
    73,708.82/110,563.26 = 21,118.52/x
  3. Step 3: Cross multiply
    73,708.82x = 110,563.26 × 21,118.52
  4. Step 4: Simplify right side
    73,708.82x = 2,334,932,417.58
  5. Step 5: Solve for x
    x = 2,334,932,417.58/73,708.82
  6. Step 6: Final answer
    x = 31,677.79

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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.