Home / 68,132.50-102,199.66-21,385.37

Finding the Fourth Proportional to 68,132.50, 102,199.66 and 21,385.37

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Solution

The fourth proportional to 68,132.50, 102,199.66 and 21,385.37 is: 32,078.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,132.50 : 102,199.66 = 21,385.37 : x
  2. Step 2: Convert to fraction form
    68,132.50/102,199.66 = 21,385.37/x
  3. Step 3: Cross multiply
    68,132.50x = 102,199.66 × 21,385.37
  4. Step 4: Simplify right side
    68,132.50x = 2,185,577,745.01
  5. Step 5: Solve for x
    x = 2,185,577,745.01/68,132.50
  6. Step 6: Final answer
    x = 32,078.34

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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.