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Finding the Fourth Proportional to 86,457.52, 129,649.56 and 33,858.64

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Solution

The fourth proportional to 86,457.52, 129,649.56 and 33,858.64 is: 50,773.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,457.52 : 129,649.56 = 33,858.64 : x
  2. Step 2: Convert to fraction form
    86,457.52/129,649.56 = 33,858.64/x
  3. Step 3: Cross multiply
    86,457.52x = 129,649.56 × 33,858.64
  4. Step 4: Simplify right side
    86,457.52x = 4,389,757,778.20
  5. Step 5: Solve for x
    x = 4,389,757,778.20/86,457.52
  6. Step 6: Final answer
    x = 50,773.58

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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.