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Finding the Fourth Proportional to 85,618.87, 118,150.99 and 47,377.76

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Solution

The fourth proportional to 85,618.87, 118,150.99 and 47,377.76 is: 65,379.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,618.87 : 118,150.99 = 47,377.76 : x
  2. Step 2: Convert to fraction form
    85,618.87/118,150.99 = 47,377.76/x
  3. Step 3: Cross multiply
    85,618.87x = 118,150.99 × 47,377.76
  4. Step 4: Simplify right side
    85,618.87x = 5,597,728,420.34
  5. Step 5: Solve for x
    x = 5,597,728,420.34/85,618.87
  6. Step 6: Final answer
    x = 65,379.61

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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.