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Finding the Fourth Proportional to 65,879.30, 90,913.73 and 35,664.62

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Solution

The fourth proportional to 65,879.30, 90,913.73 and 35,664.62 is: 49,217.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,879.30 : 90,913.73 = 35,664.62 : x
  2. Step 2: Convert to fraction form
    65,879.30/90,913.73 = 35,664.62/x
  3. Step 3: Cross multiply
    65,879.30x = 90,913.73 × 35,664.62
  4. Step 4: Simplify right side
    65,879.30x = 3,242,403,633.23
  5. Step 5: Solve for x
    x = 3,242,403,633.23/65,879.30
  6. Step 6: Final answer
    x = 49,217.34

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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.