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Finding the Fourth Proportional to 85,377.76, 117,821.24 and 47,137.36

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Solution

The fourth proportional to 85,377.76, 117,821.24 and 47,137.36 is: 65,049.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,377.76 : 117,821.24 = 47,137.36 : x
  2. Step 2: Convert to fraction form
    85,377.76/117,821.24 = 47,137.36/x
  3. Step 3: Cross multiply
    85,377.76x = 117,821.24 × 47,137.36
  4. Step 4: Simplify right side
    85,377.76x = 5,553,782,205.53
  5. Step 5: Solve for x
    x = 5,553,782,205.53/85,377.76
  6. Step 6: Final answer
    x = 65,049.52

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1.5x scale

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.