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Finding the Fourth Proportional to 68,602.32, 102,902.28 and 18,681.60

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Solution

The fourth proportional to 68,602.32, 102,902.28 and 18,681.60 is: 28,022.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,602.32 : 102,902.28 = 18,681.60 : x
  2. Step 2: Convert to fraction form
    68,602.32/102,902.28 = 18,681.60/x
  3. Step 3: Cross multiply
    68,602.32x = 102,902.28 × 18,681.60
  4. Step 4: Simplify right side
    68,602.32x = 1,922,379,234.05
  5. Step 5: Solve for x
    x = 1,922,379,234.05/68,602.32
  6. Step 6: Final answer
    x = 28,022.07

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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.