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Finding the Fourth Proportional to 70,979.60, 106,247.91 and 52,280.75

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Solution

The fourth proportional to 70,979.60, 106,247.91 and 52,280.75 is: 78,257.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,979.60 : 106,247.91 = 52,280.75 : x
  2. Step 2: Convert to fraction form
    70,979.60/106,247.91 = 52,280.75/x
  3. Step 3: Cross multiply
    70,979.60x = 106,247.91 × 52,280.75
  4. Step 4: Simplify right side
    70,979.60x = 5,554,720,420.73
  5. Step 5: Solve for x
    x = 5,554,720,420.73/70,979.60
  6. Step 6: Final answer
    x = 78,257.98

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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.