Home / 51,678.77-77,523.08-20,091.29

Finding the Fourth Proportional to 51,678.77, 77,523.08 and 20,091.29

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Solution

The fourth proportional to 51,678.77, 77,523.08 and 20,091.29 is: 30,138.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,678.77 : 77,523.08 = 20,091.29 : x
  2. Step 2: Convert to fraction form
    51,678.77/77,523.08 = 20,091.29/x
  3. Step 3: Cross multiply
    51,678.77x = 77,523.08 × 20,091.29
  4. Step 4: Simplify right side
    51,678.77x = 1,557,538,193.90
  5. Step 5: Solve for x
    x = 1,557,538,193.90/51,678.77
  6. Step 6: Final answer
    x = 30,138.84

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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.