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Finding the Fourth Proportional to 69,191.83, 103,787.85 and 19,272.07

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Solution

The fourth proportional to 69,191.83, 103,787.85 and 19,272.07 is: 28,908.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,191.83 : 103,787.85 = 19,272.07 : x
  2. Step 2: Convert to fraction form
    69,191.83/103,787.85 = 19,272.07/x
  3. Step 3: Cross multiply
    69,191.83x = 103,787.85 × 19,272.07
  4. Step 4: Simplify right side
    69,191.83x = 2,000,206,710.35
  5. Step 5: Solve for x
    x = 2,000,206,710.35/69,191.83
  6. Step 6: Final answer
    x = 28,908.13

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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.