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Finding the Fourth Proportional to 68,444.85, 102,667.56 and 21,059.64

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Solution

The fourth proportional to 68,444.85, 102,667.56 and 21,059.64 is: 31,589.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,444.85 : 102,667.56 = 21,059.64 : x
  2. Step 2: Convert to fraction form
    68,444.85/102,667.56 = 21,059.64/x
  3. Step 3: Cross multiply
    68,444.85x = 102,667.56 × 21,059.64
  4. Step 4: Simplify right side
    68,444.85x = 2,162,141,853.28
  5. Step 5: Solve for x
    x = 2,162,141,853.28/68,444.85
  6. Step 6: Final answer
    x = 31,589.55

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1.5x scale

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.