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Finding the Fourth Proportional to 71,764.58, 107,659.94 and 21,839.02

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Solution

The fourth proportional to 71,764.58, 107,659.94 and 21,839.02 is: 32,762.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,764.58 : 107,659.94 = 21,839.02 : x
  2. Step 2: Convert to fraction form
    71,764.58/107,659.94 = 21,839.02/x
  3. Step 3: Cross multiply
    71,764.58x = 107,659.94 × 21,839.02
  4. Step 4: Simplify right side
    71,764.58x = 2,351,187,204.51
  5. Step 5: Solve for x
    x = 2,351,187,204.51/71,764.58
  6. Step 6: Final answer
    x = 32,762.50

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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.