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Finding the Fourth Proportional to 69,987.65, 104,981.34 and 17,397.19

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Solution

The fourth proportional to 69,987.65, 104,981.34 and 17,397.19 is: 26,095.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,987.65 : 104,981.34 = 17,397.19 : x
  2. Step 2: Convert to fraction form
    69,987.65/104,981.34 = 17,397.19/x
  3. Step 3: Cross multiply
    69,987.65x = 104,981.34 × 17,397.19
  4. Step 4: Simplify right side
    69,987.65x = 1,826,379,793.53
  5. Step 5: Solve for x
    x = 1,826,379,793.53/69,987.65
  6. Step 6: Final answer
    x = 26,095.74

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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.