Home / 51,979.12-77,967.60-20,806

Finding the Fourth Proportional to 51,979.12, 77,967.60 and 20,806

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Solution

The fourth proportional to 51,979.12, 77,967.60 and 20,806 is: 31,208.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,979.12 : 77,967.60 = 20,806 : x
  2. Step 2: Convert to fraction form
    51,979.12/77,967.60 = 20,806/x
  3. Step 3: Cross multiply
    51,979.12x = 77,967.60 × 20,806
  4. Step 4: Simplify right side
    51,979.12x = 1,622,193,885.60
  5. Step 5: Solve for x
    x = 1,622,193,885.60/51,979.12
  6. Step 6: Final answer
    x = 31,208.57

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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.