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Finding the Fourth Proportional to 78,662.26, 118,586.36 and 73,588.42

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Solution

The fourth proportional to 78,662.26, 118,586.36 and 73,588.42 is: 110,937.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,662.26 : 118,586.36 = 73,588.42 : x
  2. Step 2: Convert to fraction form
    78,662.26/118,586.36 = 73,588.42/x
  3. Step 3: Cross multiply
    78,662.26x = 118,586.36 × 73,588.42
  4. Step 4: Simplify right side
    78,662.26x = 8,726,582,865.95
  5. Step 5: Solve for x
    x = 8,726,582,865.95/78,662.26
  6. Step 6: Final answer
    x = 110,937.35

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.