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Finding the Fourth Proportional to 69,177.89, 103,756.51 and 19,252.79

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Solution

The fourth proportional to 69,177.89, 103,756.51 and 19,252.79 is: 28,876.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,177.89 : 103,756.51 = 19,252.79 : x
  2. Step 2: Convert to fraction form
    69,177.89/103,756.51 = 19,252.79/x
  3. Step 3: Cross multiply
    69,177.89x = 103,756.51 × 19,252.79
  4. Step 4: Simplify right side
    69,177.89x = 1,997,601,731.25
  5. Step 5: Solve for x
    x = 1,997,601,731.25/69,177.89
  6. Step 6: Final answer
    x = 28,876.30

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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.