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Finding the Fourth Proportional to 68,667.90, 102,904.65 and 60,308.70

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Solution

The fourth proportional to 68,667.90, 102,904.65 and 60,308.70 is: 90,377.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,667.90 : 102,904.65 = 60,308.70 : x
  2. Step 2: Convert to fraction form
    68,667.90/102,904.65 = 60,308.70/x
  3. Step 3: Cross multiply
    68,667.90x = 102,904.65 × 60,308.70
  4. Step 4: Simplify right side
    68,667.90x = 6,206,045,665.46
  5. Step 5: Solve for x
    x = 6,206,045,665.46/68,667.90
  6. Step 6: Final answer
    x = 90,377.68

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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.