Home / 68,079.69-102,147.66-30,108.96

Finding the Fourth Proportional to 68,079.69, 102,147.66 and 30,108.96

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Solution

The fourth proportional to 68,079.69, 102,147.66 and 30,108.96 is: 45,175.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,079.69 : 102,147.66 = 30,108.96 : x
  2. Step 2: Convert to fraction form
    68,079.69/102,147.66 = 30,108.96/x
  3. Step 3: Cross multiply
    68,079.69x = 102,147.66 × 30,108.96
  4. Step 4: Simplify right side
    68,079.69x = 3,075,559,809.03
  5. Step 5: Solve for x
    x = 3,075,559,809.03/68,079.69
  6. Step 6: Final answer
    x = 45,175.88

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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.