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Finding the Fourth Proportional to 77,872.91, 107,462.37 and 43,880.79

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Solution

The fourth proportional to 77,872.91, 107,462.37 and 43,880.79 is: 60,554.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,872.91 : 107,462.37 = 43,880.79 : x
  2. Step 2: Convert to fraction form
    77,872.91/107,462.37 = 43,880.79/x
  3. Step 3: Cross multiply
    77,872.91x = 107,462.37 × 43,880.79
  4. Step 4: Simplify right side
    77,872.91x = 4,715,533,690.87
  5. Step 5: Solve for x
    x = 4,715,533,690.87/77,872.91
  6. Step 6: Final answer
    x = 60,554.23

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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.