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Finding the Fourth Proportional to 79,289.48, 109,418.58 and 45,754.76

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Solution

The fourth proportional to 79,289.48, 109,418.58 and 45,754.76 is: 63,141.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,289.48 : 109,418.58 = 45,754.76 : x
  2. Step 2: Convert to fraction form
    79,289.48/109,418.58 = 45,754.76/x
  3. Step 3: Cross multiply
    79,289.48x = 109,418.58 × 45,754.76
  4. Step 4: Simplify right side
    79,289.48x = 5,006,420,867.44
  5. Step 5: Solve for x
    x = 5,006,420,867.44/79,289.48
  6. Step 6: Final answer
    x = 63,141.05

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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.