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Finding the Fourth Proportional to 65,131.78, 89,883.47 and 36,451.22

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Solution

The fourth proportional to 65,131.78, 89,883.47 and 36,451.22 is: 50,303.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,131.78 : 89,883.47 = 36,451.22 : x
  2. Step 2: Convert to fraction form
    65,131.78/89,883.47 = 36,451.22/x
  3. Step 3: Cross multiply
    65,131.78x = 89,883.47 × 36,451.22
  4. Step 4: Simplify right side
    65,131.78x = 3,276,361,507.66
  5. Step 5: Solve for x
    x = 3,276,361,507.66/65,131.78
  6. Step 6: Final answer
    x = 50,303.58

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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.