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Finding the Fourth Proportional to 85,608.25, 118,142.87 and 47,367.18

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Solution

The fourth proportional to 85,608.25, 118,142.87 and 47,367.18 is: 65,368.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,608.25 : 118,142.87 = 47,367.18 : x
  2. Step 2: Convert to fraction form
    85,608.25/118,142.87 = 47,367.18/x
  3. Step 3: Cross multiply
    85,608.25x = 118,142.87 × 47,367.18
  4. Step 4: Simplify right side
    85,608.25x = 5,596,094,589.01
  5. Step 5: Solve for x
    x = 5,596,094,589.01/85,608.25
  6. Step 6: Final answer
    x = 65,368.64

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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.