Home / 68,621.76-102,922.11-18,705.87

Finding the Fourth Proportional to 68,621.76, 102,922.11 and 18,705.87

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Solution

The fourth proportional to 68,621.76, 102,922.11 and 18,705.87 is: 28,055.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,621.76 : 102,922.11 = 18,705.87 : x
  2. Step 2: Convert to fraction form
    68,621.76/102,922.11 = 18,705.87/x
  3. Step 3: Cross multiply
    68,621.76x = 102,922.11 × 18,705.87
  4. Step 4: Simplify right side
    68,621.76x = 1,925,247,609.79
  5. Step 5: Solve for x
    x = 1,925,247,609.79/68,621.76
  6. Step 6: Final answer
    x = 28,055.93

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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.