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Finding the Fourth Proportional to 77,676.49, 107,599.45 and 76,101.85

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Solution

The fourth proportional to 77,676.49, 107,599.45 and 76,101.85 is: 105,418.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,676.49 : 107,599.45 = 76,101.85 : x
  2. Step 2: Convert to fraction form
    77,676.49/107,599.45 = 76,101.85/x
  3. Step 3: Cross multiply
    77,676.49x = 107,599.45 × 76,101.85
  4. Step 4: Simplify right side
    77,676.49x = 8,188,516,665.99
  5. Step 5: Solve for x
    x = 8,188,516,665.99/77,676.49
  6. Step 6: Final answer
    x = 105,418.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.