Home / 81,579.06-122,353.98-51,908.76

Finding the Fourth Proportional to 81,579.06, 122,353.98 and 51,908.76

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Solution

The fourth proportional to 81,579.06, 122,353.98 and 51,908.76 is: 77,853.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,579.06 : 122,353.98 = 51,908.76 : x
  2. Step 2: Convert to fraction form
    81,579.06/122,353.98 = 51,908.76/x
  3. Step 3: Cross multiply
    81,579.06x = 122,353.98 × 51,908.76
  4. Step 4: Simplify right side
    81,579.06x = 6,351,243,382.86
  5. Step 5: Solve for x
    x = 6,351,243,382.86/81,579.06
  6. Step 6: Final answer
    x = 77,853.84

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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.