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Finding the Fourth Proportional to 67,797, 101,695.50 and 21,049.88

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Solution

The fourth proportional to 67,797, 101,695.50 and 21,049.88 is: 31,574.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,797 : 101,695.50 = 21,049.88 : x
  2. Step 2: Convert to fraction form
    67,797/101,695.50 = 21,049.88/x
  3. Step 3: Cross multiply
    67,797x = 101,695.50 × 21,049.88
  4. Step 4: Simplify right side
    67,797x = 2,140,677,563.06
  5. Step 5: Solve for x
    x = 2,140,677,563.06/67,797
  6. Step 6: Final answer
    x = 31,574.81

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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.