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Finding the Fourth Proportional to 68,614.32, 102,920.40 and 21,866.88

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Solution

The fourth proportional to 68,614.32, 102,920.40 and 21,866.88 is: 32,799.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,614.32 : 102,920.40 = 21,866.88 : x
  2. Step 2: Convert to fraction form
    68,614.32/102,920.40 = 21,866.88/x
  3. Step 3: Cross multiply
    68,614.32x = 102,920.40 × 21,866.88
  4. Step 4: Simplify right side
    68,614.32x = 2,250,548,036.35
  5. Step 5: Solve for x
    x = 2,250,548,036.35/68,614.32
  6. Step 6: Final answer
    x = 32,799.98

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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.