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Finding the Fourth Proportional to 69,242.52, 103,867.92 and 21,859.16

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Solution

The fourth proportional to 69,242.52, 103,867.92 and 21,859.16 is: 32,790.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,242.52 : 103,867.92 = 21,859.16 : x
  2. Step 2: Convert to fraction form
    69,242.52/103,867.92 = 21,859.16/x
  3. Step 3: Cross multiply
    69,242.52x = 103,867.92 × 21,859.16
  4. Step 4: Simplify right side
    69,242.52x = 2,270,465,482.15
  5. Step 5: Solve for x
    x = 2,270,465,482.15/69,242.52
  6. Step 6: Final answer
    x = 32,790.05

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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.