Home / 79,309.08-109,408.80-47,471.85

Finding the Fourth Proportional to 79,309.08, 109,408.80 and 47,471.85

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Solution

The fourth proportional to 79,309.08, 109,408.80 and 47,471.85 is: 65,488.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,309.08 : 109,408.80 = 47,471.85 : x
  2. Step 2: Convert to fraction form
    79,309.08/109,408.80 = 47,471.85/x
  3. Step 3: Cross multiply
    79,309.08x = 109,408.80 × 47,471.85
  4. Step 4: Simplify right side
    79,309.08x = 5,193,838,142.28
  5. Step 5: Solve for x
    x = 5,193,838,142.28/79,309.08
  6. Step 6: Final answer
    x = 65,488.57

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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.