Home / 56,115.96-84,171.20-21,052.88

Finding the Fourth Proportional to 56,115.96, 84,171.20 and 21,052.88

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Solution

The fourth proportional to 56,115.96, 84,171.20 and 21,052.88 is: 31,578.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,115.96 : 84,171.20 = 21,052.88 : x
  2. Step 2: Convert to fraction form
    56,115.96/84,171.20 = 21,052.88/x
  3. Step 3: Cross multiply
    56,115.96x = 84,171.20 × 21,052.88
  4. Step 4: Simplify right side
    56,115.96x = 1,772,046,173.06
  5. Step 5: Solve for x
    x = 1,772,046,173.06/56,115.96
  6. Step 6: Final answer
    x = 31,578.29

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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.