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Finding the Fourth Proportional to 78,835.90, 108,792.66 and 43,027.42

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Solution

The fourth proportional to 78,835.90, 108,792.66 and 43,027.42 is: 59,377.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,835.90 : 108,792.66 = 43,027.42 : x
  2. Step 2: Convert to fraction form
    78,835.90/108,792.66 = 43,027.42/x
  3. Step 3: Cross multiply
    78,835.90x = 108,792.66 × 43,027.42
  4. Step 4: Simplify right side
    78,835.90x = 4,681,067,474.74
  5. Step 5: Solve for x
    x = 4,681,067,474.74/78,835.90
  6. Step 6: Final answer
    x = 59,377.36

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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.