Home / 52,100.82-78,151.23-12,657.87

Finding the Fourth Proportional to 52,100.82, 78,151.23 and 12,657.87

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Solution

The fourth proportional to 52,100.82, 78,151.23 and 12,657.87 is: 18,986.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,100.82 : 78,151.23 = 12,657.87 : x
  2. Step 2: Convert to fraction form
    52,100.82/78,151.23 = 12,657.87/x
  3. Step 3: Cross multiply
    52,100.82x = 78,151.23 × 12,657.87
  4. Step 4: Simplify right side
    52,100.82x = 989,228,109.68
  5. Step 5: Solve for x
    x = 989,228,109.68/52,100.82
  6. Step 6: Final answer
    x = 18,986.81

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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.