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Finding the Fourth Proportional to 52,061.86, 78,092.07 and 12,619.30

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Solution

The fourth proportional to 52,061.86, 78,092.07 and 12,619.30 is: 18,928.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,061.86 : 78,092.07 = 12,619.30 : x
  2. Step 2: Convert to fraction form
    52,061.86/78,092.07 = 12,619.30/x
  3. Step 3: Cross multiply
    52,061.86x = 78,092.07 × 12,619.30
  4. Step 4: Simplify right side
    52,061.86x = 985,467,258.95
  5. Step 5: Solve for x
    x = 985,467,258.95/52,061.86
  6. Step 6: Final answer
    x = 18,928.78

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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.