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Finding the Fourth Proportional to 68,494.32, 102,740.40 and 21,746.52

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Solution

The fourth proportional to 68,494.32, 102,740.40 and 21,746.52 is: 32,619.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,494.32 : 102,740.40 = 21,746.52 : x
  2. Step 2: Convert to fraction form
    68,494.32/102,740.40 = 21,746.52/x
  3. Step 3: Cross multiply
    68,494.32x = 102,740.40 × 21,746.52
  4. Step 4: Simplify right side
    68,494.32x = 2,234,246,163.41
  5. Step 5: Solve for x
    x = 2,234,246,163.41/68,494.32
  6. Step 6: Final answer
    x = 32,619.44

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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.