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Finding the Fourth Proportional to 77,890.88, 107,494.48 and 45,192

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Solution

The fourth proportional to 77,890.88, 107,494.48 and 45,192 is: 62,367.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,890.88 : 107,494.48 = 45,192 : x
  2. Step 2: Convert to fraction form
    77,890.88/107,494.48 = 45,192/x
  3. Step 3: Cross multiply
    77,890.88x = 107,494.48 × 45,192
  4. Step 4: Simplify right side
    77,890.88x = 4,857,890,540.16
  5. Step 5: Solve for x
    x = 4,857,890,540.16/77,890.88
  6. Step 6: Final answer
    x = 62,367.90

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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.