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Finding the Fourth Proportional to 77,797.72, 107,354.03 and 43,339.91

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Solution

The fourth proportional to 77,797.72, 107,354.03 and 43,339.91 is: 59,805.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,797.72 : 107,354.03 = 43,339.91 : x
  2. Step 2: Convert to fraction form
    77,797.72/107,354.03 = 43,339.91/x
  3. Step 3: Cross multiply
    77,797.72x = 107,354.03 × 43,339.91
  4. Step 4: Simplify right side
    77,797.72x = 4,652,713,848.73
  5. Step 5: Solve for x
    x = 4,652,713,848.73/77,797.72
  6. Step 6: Final answer
    x = 59,805.28

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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.