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Finding the Fourth Proportional to 69,284.40, 103,926.84 and 19,364.18

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Solution

The fourth proportional to 69,284.40, 103,926.84 and 19,364.18 is: 29,046.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,284.40 : 103,926.84 = 19,364.18 : x
  2. Step 2: Convert to fraction form
    69,284.40/103,926.84 = 19,364.18/x
  3. Step 3: Cross multiply
    69,284.40x = 103,926.84 × 19,364.18
  4. Step 4: Simplify right side
    69,284.40x = 2,012,458,036.59
  5. Step 5: Solve for x
    x = 2,012,458,036.59/69,284.40
  6. Step 6: Final answer
    x = 29,046.34

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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.