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Finding the Fourth Proportional to 68,510.59, 102,695.83 and 38,865.80

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Solution

The fourth proportional to 68,510.59, 102,695.83 and 38,865.80 is: 58,258.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,510.59 : 102,695.83 = 38,865.80 : x
  2. Step 2: Convert to fraction form
    68,510.59/102,695.83 = 38,865.80/x
  3. Step 3: Cross multiply
    68,510.59x = 102,695.83 × 38,865.80
  4. Step 4: Simplify right side
    68,510.59x = 3,991,355,589.61
  5. Step 5: Solve for x
    x = 3,991,355,589.61/68,510.59
  6. Step 6: Final answer
    x = 58,258.96

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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.