Home / 69,022.66-103,665.20-42,909.88

Finding the Fourth Proportional to 69,022.66, 103,665.20 and 42,909.88

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Solution

The fourth proportional to 69,022.66, 103,665.20 and 42,909.88 is: 64,446.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,022.66 : 103,665.20 = 42,909.88 : x
  2. Step 2: Convert to fraction form
    69,022.66/103,665.20 = 42,909.88/x
  3. Step 3: Cross multiply
    69,022.66x = 103,665.20 × 42,909.88
  4. Step 4: Simplify right side
    69,022.66x = 4,448,261,292.18
  5. Step 5: Solve for x
    x = 4,448,261,292.18/69,022.66
  6. Step 6: Final answer
    x = 64,446.39

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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.