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Finding the Fourth Proportional to 69,246, 103,886.28 and 19,998

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Solution

The fourth proportional to 69,246, 103,886.28 and 19,998 is: 30,001.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,246 : 103,886.28 = 19,998 : x
  2. Step 2: Convert to fraction form
    69,246/103,886.28 = 19,998/x
  3. Step 3: Cross multiply
    69,246x = 103,886.28 × 19,998
  4. Step 4: Simplify right side
    69,246x = 2,077,517,827.44
  5. Step 5: Solve for x
    x = 2,077,517,827.44/69,246
  6. Step 6: Final answer
    x = 30,001.99

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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.