Home / 68,178.87-102,284.46-21,431.79

Finding the Fourth Proportional to 68,178.87, 102,284.46 and 21,431.79

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Solution

The fourth proportional to 68,178.87, 102,284.46 and 21,431.79 is: 32,152.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,178.87 : 102,284.46 = 21,431.79 : x
  2. Step 2: Convert to fraction form
    68,178.87/102,284.46 = 21,431.79/x
  3. Step 3: Cross multiply
    68,178.87x = 102,284.46 × 21,431.79
  4. Step 4: Simplify right side
    68,178.87x = 2,192,139,066.98
  5. Step 5: Solve for x
    x = 2,192,139,066.98/68,178.87
  6. Step 6: Final answer
    x = 32,152.76

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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.