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Finding the Fourth Proportional to 77,579.79, 107,104.77 and 52,123.11

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Solution

The fourth proportional to 77,579.79, 107,104.77 and 52,123.11 is: 71,959.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,579.79 : 107,104.77 = 52,123.11 : x
  2. Step 2: Convert to fraction form
    77,579.79/107,104.77 = 52,123.11/x
  3. Step 3: Cross multiply
    77,579.79x = 107,104.77 × 52,123.11
  4. Step 4: Simplify right side
    77,579.79x = 5,582,633,708.23
  5. Step 5: Solve for x
    x = 5,582,633,708.23/77,579.79
  6. Step 6: Final answer
    x = 71,959.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.