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Finding the Fourth Proportional to 78,064.81, 117,097.03 and 60,321.26

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Solution

The fourth proportional to 78,064.81, 117,097.03 and 60,321.26 is: 90,481.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,064.81 : 117,097.03 = 60,321.26 : x
  2. Step 2: Convert to fraction form
    78,064.81/117,097.03 = 60,321.26/x
  3. Step 3: Cross multiply
    78,064.81x = 117,097.03 × 60,321.26
  4. Step 4: Simplify right side
    78,064.81x = 7,063,440,090.25
  5. Step 5: Solve for x
    x = 7,063,440,090.25/78,064.81
  6. Step 6: Final answer
    x = 90,481.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.