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Finding the Fourth Proportional to 85,963.70, 118,623.96 and 47,720.24

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Solution

The fourth proportional to 85,963.70, 118,623.96 and 47,720.24 is: 65,850.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,963.70 : 118,623.96 = 47,720.24 : x
  2. Step 2: Convert to fraction form
    85,963.70/118,623.96 = 47,720.24/x
  3. Step 3: Cross multiply
    85,963.70x = 118,623.96 × 47,720.24
  4. Step 4: Simplify right side
    85,963.70x = 5,660,763,840.95
  5. Step 5: Solve for x
    x = 5,660,763,840.95/85,963.70
  6. Step 6: Final answer
    x = 65,850.63

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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.