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Finding the Fourth Proportional to 69,035.63, 103,554.70 and 21,649.66

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Solution

The fourth proportional to 69,035.63, 103,554.70 and 21,649.66 is: 32,474.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,035.63 : 103,554.70 = 21,649.66 : x
  2. Step 2: Convert to fraction form
    69,035.63/103,554.70 = 21,649.66/x
  3. Step 3: Cross multiply
    69,035.63x = 103,554.70 × 21,649.66
  4. Step 4: Simplify right side
    69,035.63x = 2,241,923,733.39
  5. Step 5: Solve for x
    x = 2,241,923,733.39/69,035.63
  6. Step 6: Final answer
    x = 32,474.88

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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.