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Finding the Fourth Proportional to 85,608.66, 118,143.42 and 47,367.54

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Solution

The fourth proportional to 85,608.66, 118,143.42 and 47,367.54 is: 65,369.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,608.66 : 118,143.42 = 47,367.54 : x
  2. Step 2: Convert to fraction form
    85,608.66/118,143.42 = 47,367.54/x
  3. Step 3: Cross multiply
    85,608.66x = 118,143.42 × 47,367.54
  4. Step 4: Simplify right side
    85,608.66x = 5,596,163,172.59
  5. Step 5: Solve for x
    x = 5,596,163,172.59/85,608.66
  6. Step 6: Final answer
    x = 65,369.12

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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.