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Finding the Fourth Proportional to 78,564.88, 117,808.44 and 41,119.12

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Solution

The fourth proportional to 78,564.88, 117,808.44 and 41,119.12 is: 61,658.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,564.88 : 117,808.44 = 41,119.12 : x
  2. Step 2: Convert to fraction form
    78,564.88/117,808.44 = 41,119.12/x
  3. Step 3: Cross multiply
    78,564.88x = 117,808.44 × 41,119.12
  4. Step 4: Simplify right side
    78,564.88x = 4,844,179,381.37
  5. Step 5: Solve for x
    x = 4,844,179,381.37/78,564.88
  6. Step 6: Final answer
    x = 61,658.33

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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.