Home / 68,115.20-102,190.07-21,368.48

Finding the Fourth Proportional to 68,115.20, 102,190.07 and 21,368.48

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Solution

The fourth proportional to 68,115.20, 102,190.07 and 21,368.48 is: 32,058.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,115.20 : 102,190.07 = 21,368.48 : x
  2. Step 2: Convert to fraction form
    68,115.20/102,190.07 = 21,368.48/x
  3. Step 3: Cross multiply
    68,115.20x = 102,190.07 × 21,368.48
  4. Step 4: Simplify right side
    68,115.20x = 2,183,646,009.46
  5. Step 5: Solve for x
    x = 2,183,646,009.46/68,115.20
  6. Step 6: Final answer
    x = 32,058.13

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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.