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Finding the Fourth Proportional to 77,479.26, 116,218.70 and 43,729.98

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Solution

The fourth proportional to 77,479.26, 116,218.70 and 43,729.98 is: 65,594.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,479.26 : 116,218.70 = 43,729.98 : x
  2. Step 2: Convert to fraction form
    77,479.26/116,218.70 = 43,729.98/x
  3. Step 3: Cross multiply
    77,479.26x = 116,218.70 × 43,729.98
  4. Step 4: Simplify right side
    77,479.26x = 5,082,240,936.14
  5. Step 5: Solve for x
    x = 5,082,240,936.14/77,479.26
  6. Step 6: Final answer
    x = 65,594.86

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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.