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Finding the Fourth Proportional to 68,316.79, 102,467.47 and 18,400.54

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Solution

The fourth proportional to 68,316.79, 102,467.47 and 18,400.54 is: 27,598.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,316.79 : 102,467.47 = 18,400.54 : x
  2. Step 2: Convert to fraction form
    68,316.79/102,467.47 = 18,400.54/x
  3. Step 3: Cross multiply
    68,316.79x = 102,467.47 × 18,400.54
  4. Step 4: Simplify right side
    68,316.79x = 1,885,456,780.43
  5. Step 5: Solve for x
    x = 1,885,456,780.43/68,316.79
  6. Step 6: Final answer
    x = 27,598.73

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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.