Home / 68,566.87-102,853-21,177.74

Finding the Fourth Proportional to 68,566.87, 102,853 and 21,177.74

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Solution

The fourth proportional to 68,566.87, 102,853 and 21,177.74 is: 31,767.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,566.87 : 102,853 = 21,177.74 : x
  2. Step 2: Convert to fraction form
    68,566.87/102,853 = 21,177.74/x
  3. Step 3: Cross multiply
    68,566.87x = 102,853 × 21,177.74
  4. Step 4: Simplify right side
    68,566.87x = 2,178,193,577.96
  5. Step 5: Solve for x
    x = 2,178,193,577.96/68,566.87
  6. Step 6: Final answer
    x = 31,767.44

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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.