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Finding the Fourth Proportional to 68,362.03, 102,395.42 and 66,688.97

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Solution

The fourth proportional to 68,362.03, 102,395.42 and 66,688.97 is: 99,889.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,362.03 : 102,395.42 = 66,688.97 : x
  2. Step 2: Convert to fraction form
    68,362.03/102,395.42 = 66,688.97/x
  3. Step 3: Cross multiply
    68,362.03x = 102,395.42 × 66,688.97
  4. Step 4: Simplify right side
    68,362.03x = 6,828,644,885.59
  5. Step 5: Solve for x
    x = 6,828,644,885.59/68,362.03
  6. Step 6: Final answer
    x = 99,889.45

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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.