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Finding the Fourth Proportional to 68,895.77, 103,347.51 and 21,517.40

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Solution

The fourth proportional to 68,895.77, 103,347.51 and 21,517.40 is: 32,277.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,895.77 : 103,347.51 = 21,517.40 : x
  2. Step 2: Convert to fraction form
    68,895.77/103,347.51 = 21,517.40/x
  3. Step 3: Cross multiply
    68,895.77x = 103,347.51 × 21,517.40
  4. Step 4: Simplify right side
    68,895.77x = 2,223,769,889.35
  5. Step 5: Solve for x
    x = 2,223,769,889.35/68,895.77
  6. Step 6: Final answer
    x = 32,277.31

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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.