Home / 77,052.67-115,579.00-20,890.51

Finding the Fourth Proportional to 77,052.67, 115,579.00 and 20,890.51

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Solution

The fourth proportional to 77,052.67, 115,579.00 and 20,890.51 is: 31,335.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,052.67 : 115,579.00 = 20,890.51 : x
  2. Step 2: Convert to fraction form
    77,052.67/115,579.00 = 20,890.51/x
  3. Step 3: Cross multiply
    77,052.67x = 115,579.00 × 20,890.51
  4. Step 4: Simplify right side
    77,052.67x = 2,414,503,992.46
  5. Step 5: Solve for x
    x = 2,414,503,992.46/77,052.67
  6. Step 6: Final answer
    x = 31,335.76

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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.