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Finding the Fourth Proportional to 68,990.67, 95,190.24 and 42,123.39

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Solution

The fourth proportional to 68,990.67, 95,190.24 and 42,123.39 is: 58,119.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,990.67 : 95,190.24 = 42,123.39 : x
  2. Step 2: Convert to fraction form
    68,990.67/95,190.24 = 42,123.39/x
  3. Step 3: Cross multiply
    68,990.67x = 95,190.24 × 42,123.39
  4. Step 4: Simplify right side
    68,990.67x = 4,009,735,603.71
  5. Step 5: Solve for x
    x = 4,009,735,603.71/68,990.67
  6. Step 6: Final answer
    x = 58,119.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.