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Finding the Fourth Proportional to 69,019.20, 103,531.10 and 19,095.12

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Solution

The fourth proportional to 69,019.20, 103,531.10 and 19,095.12 is: 28,643.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,019.20 : 103,531.10 = 19,095.12 : x
  2. Step 2: Convert to fraction form
    69,019.20/103,531.10 = 19,095.12/x
  3. Step 3: Cross multiply
    69,019.20x = 103,531.10 × 19,095.12
  4. Step 4: Simplify right side
    69,019.20x = 1,976,938,366.12
  5. Step 5: Solve for x
    x = 1,976,938,366.12/69,019.20
  6. Step 6: Final answer
    x = 28,643.31

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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.