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Finding the Fourth Proportional to 68,596.39, 102,901.34 and 21,209.64

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Solution

The fourth proportional to 68,596.39, 102,901.34 and 21,209.64 is: 31,816.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,596.39 : 102,901.34 = 21,209.64 : x
  2. Step 2: Convert to fraction form
    68,596.39/102,901.34 = 21,209.64/x
  3. Step 3: Cross multiply
    68,596.39x = 102,901.34 × 21,209.64
  4. Step 4: Simplify right side
    68,596.39x = 2,182,500,376.92
  5. Step 5: Solve for x
    x = 2,182,500,376.92/68,596.39
  6. Step 6: Final answer
    x = 31,816.55

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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.