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Finding the Fourth Proportional to 68,706.66, 94,793.67 and 38,487.90

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Solution

The fourth proportional to 68,706.66, 94,793.67 and 38,487.90 is: 53,101.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,706.66 : 94,793.67 = 38,487.90 : x
  2. Step 2: Convert to fraction form
    68,706.66/94,793.67 = 38,487.90/x
  3. Step 3: Cross multiply
    68,706.66x = 94,793.67 × 38,487.90
  4. Step 4: Simplify right side
    68,706.66x = 3,648,409,291.59
  5. Step 5: Solve for x
    x = 3,648,409,291.59/68,706.66
  6. Step 6: Final answer
    x = 53,101.25

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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.