Home / 81,764.20-122,646.30-25,608.70

Finding the Fourth Proportional to 81,764.20, 122,646.30 and 25,608.70

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Solution

The fourth proportional to 81,764.20, 122,646.30 and 25,608.70 is: 38,413.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,764.20 : 122,646.30 = 25,608.70 : x
  2. Step 2: Convert to fraction form
    81,764.20/122,646.30 = 25,608.70/x
  3. Step 3: Cross multiply
    81,764.20x = 122,646.30 × 25,608.70
  4. Step 4: Simplify right side
    81,764.20x = 3,140,812,174.77
  5. Step 5: Solve for x
    x = 3,140,812,174.77/81,764.20
  6. Step 6: Final answer
    x = 38,413.05

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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.