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Finding the Fourth Proportional to 69,763.64, 104,645.22 and 19,162.72

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Solution

The fourth proportional to 69,763.64, 104,645.22 and 19,162.72 is: 28,744.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,763.64 : 104,645.22 = 19,162.72 : x
  2. Step 2: Convert to fraction form
    69,763.64/104,645.22 = 19,162.72/x
  3. Step 3: Cross multiply
    69,763.64x = 104,645.22 × 19,162.72
  4. Step 4: Simplify right side
    69,763.64x = 2,005,287,050.20
  5. Step 5: Solve for x
    x = 2,005,287,050.20/69,763.64
  6. Step 6: Final answer
    x = 28,744.01

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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.