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Finding the Fourth Proportional to 69,126.66, 103,708.08 and 21,739.83

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Solution

The fourth proportional to 69,126.66, 103,708.08 and 21,739.83 is: 32,615.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,126.66 : 103,708.08 = 21,739.83 : x
  2. Step 2: Convert to fraction form
    69,126.66/103,708.08 = 21,739.83/x
  3. Step 3: Cross multiply
    69,126.66x = 103,708.08 × 21,739.83
  4. Step 4: Simplify right side
    69,126.66x = 2,254,596,028.83
  5. Step 5: Solve for x
    x = 2,254,596,028.83/69,126.66
  6. Step 6: Final answer
    x = 32,615.43

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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.