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Finding the Fourth Proportional to 69,101.79, 103,660.09 and 19,182.10

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Solution

The fourth proportional to 69,101.79, 103,660.09 and 19,182.10 is: 28,775.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,101.79 : 103,660.09 = 19,182.10 : x
  2. Step 2: Convert to fraction form
    69,101.79/103,660.09 = 19,182.10/x
  3. Step 3: Cross multiply
    69,101.79x = 103,660.09 × 19,182.10
  4. Step 4: Simplify right side
    69,101.79x = 1,988,418,212.39
  5. Step 5: Solve for x
    x = 1,988,418,212.39/69,101.79
  6. Step 6: Final answer
    x = 28,775.21

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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.