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Finding the Fourth Proportional to 77,805.45, 116,695.31 and 27,878.13

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Solution

The fourth proportional to 77,805.45, 116,695.31 and 27,878.13 is: 41,812.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,805.45 : 116,695.31 = 27,878.13 : x
  2. Step 2: Convert to fraction form
    77,805.45/116,695.31 = 27,878.13/x
  3. Step 3: Cross multiply
    77,805.45x = 116,695.31 × 27,878.13
  4. Step 4: Simplify right side
    77,805.45x = 3,253,246,883.18
  5. Step 5: Solve for x
    x = 3,253,246,883.18/77,805.45
  6. Step 6: Final answer
    x = 41,812.58

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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.