Home / 56,680.31-84,965.10-21,115.59

Finding the Fourth Proportional to 56,680.31, 84,965.10 and 21,115.59

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Solution

The fourth proportional to 56,680.31, 84,965.10 and 21,115.59 is: 31,652.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,680.31 : 84,965.10 = 21,115.59 : x
  2. Step 2: Convert to fraction form
    56,680.31/84,965.10 = 21,115.59/x
  3. Step 3: Cross multiply
    56,680.31x = 84,965.10 × 21,115.59
  4. Step 4: Simplify right side
    56,680.31x = 1,794,087,936.88
  5. Step 5: Solve for x
    x = 1,794,087,936.88/56,680.31
  6. Step 6: Final answer
    x = 31,652.76

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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.