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Finding the Fourth Proportional to 85,940.91, 118,605.60 and 47,704.05

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Solution

The fourth proportional to 85,940.91, 118,605.60 and 47,704.05 is: 65,835.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,940.91 : 118,605.60 = 47,704.05 : x
  2. Step 2: Convert to fraction form
    85,940.91/118,605.60 = 47,704.05/x
  3. Step 3: Cross multiply
    85,940.91x = 118,605.60 × 47,704.05
  4. Step 4: Simplify right side
    85,940.91x = 5,657,967,472.68
  5. Step 5: Solve for x
    x = 5,657,967,472.68/85,940.91
  6. Step 6: Final answer
    x = 65,835.55

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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.