Home / 68,250.42-102,486.78-42,121.26

Finding the Fourth Proportional to 68,250.42, 102,486.78 and 42,121.26

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Solution

The fourth proportional to 68,250.42, 102,486.78 and 42,121.26 is: 63,250.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,250.42 : 102,486.78 = 42,121.26 : x
  2. Step 2: Convert to fraction form
    68,250.42/102,486.78 = 42,121.26/x
  3. Step 3: Cross multiply
    68,250.42x = 102,486.78 × 42,121.26
  4. Step 4: Simplify right side
    68,250.42x = 4,316,872,306.94
  5. Step 5: Solve for x
    x = 4,316,872,306.94/68,250.42
  6. Step 6: Final answer
    x = 63,250.49

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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.