Home / 68,137.60-102,222.75-21,390.46

Finding the Fourth Proportional to 68,137.60, 102,222.75 and 21,390.46

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Solution

The fourth proportional to 68,137.60, 102,222.75 and 21,390.46 is: 32,090.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,137.60 : 102,222.75 = 21,390.46 : x
  2. Step 2: Convert to fraction form
    68,137.60/102,222.75 = 21,390.46/x
  3. Step 3: Cross multiply
    68,137.60x = 102,222.75 × 21,390.46
  4. Step 4: Simplify right side
    68,137.60x = 2,186,591,644.97
  5. Step 5: Solve for x
    x = 2,186,591,644.97/68,137.60
  6. Step 6: Final answer
    x = 32,090.82

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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.