Home / 68,121.38-102,088.92-51,467.78

Finding the Fourth Proportional to 68,121.38, 102,088.92 and 51,467.78

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Solution

The fourth proportional to 68,121.38, 102,088.92 and 51,467.78 is: 77,131.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,121.38 : 102,088.92 = 51,467.78 : x
  2. Step 2: Convert to fraction form
    68,121.38/102,088.92 = 51,467.78/x
  3. Step 3: Cross multiply
    68,121.38x = 102,088.92 × 51,467.78
  4. Step 4: Simplify right side
    68,121.38x = 5,254,290,075.00
  5. Step 5: Solve for x
    x = 5,254,290,075.00/68,121.38
  6. Step 6: Final answer
    x = 77,131.29

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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.