Home / 68,121.63-102,181.26-30,655.19

Finding the Fourth Proportional to 68,121.63, 102,181.26 and 30,655.19

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Solution

The fourth proportional to 68,121.63, 102,181.26 and 30,655.19 is: 45,982.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,121.63 : 102,181.26 = 30,655.19 : x
  2. Step 2: Convert to fraction form
    68,121.63/102,181.26 = 30,655.19/x
  3. Step 3: Cross multiply
    68,121.63x = 102,181.26 × 30,655.19
  4. Step 4: Simplify right side
    68,121.63x = 3,132,385,939.74
  5. Step 5: Solve for x
    x = 3,132,385,939.74/68,121.63
  6. Step 6: Final answer
    x = 45,982.25

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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.