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Finding the Fourth Proportional to 69,207.90, 103,811.93 and 19,288.14

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Solution

The fourth proportional to 69,207.90, 103,811.93 and 19,288.14 is: 28,932.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,207.90 : 103,811.93 = 19,288.14 : x
  2. Step 2: Convert to fraction form
    69,207.90/103,811.93 = 19,288.14/x
  3. Step 3: Cross multiply
    69,207.90x = 103,811.93 × 19,288.14
  4. Step 4: Simplify right side
    69,207.90x = 2,002,338,943.07
  5. Step 5: Solve for x
    x = 2,002,338,943.07/69,207.90
  6. Step 6: Final answer
    x = 28,932.23

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1.5x scale

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.