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Finding the Fourth Proportional to 72,535.96, 108,791.40 and 19,228.29

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Solution

The fourth proportional to 72,535.96, 108,791.40 and 19,228.29 is: 28,839.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,535.96 : 108,791.40 = 19,228.29 : x
  2. Step 2: Convert to fraction form
    72,535.96/108,791.40 = 19,228.29/x
  3. Step 3: Cross multiply
    72,535.96x = 108,791.40 × 19,228.29
  4. Step 4: Simplify right side
    72,535.96x = 2,091,872,252.84
  5. Step 5: Solve for x
    x = 2,091,872,252.84/72,535.96
  6. Step 6: Final answer
    x = 28,839.11

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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.