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Finding the Fourth Proportional to 57,887.66, 86,837.87 and 18,435.70

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Solution

The fourth proportional to 57,887.66, 86,837.87 and 18,435.70 is: 27,655.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,887.66 : 86,837.87 = 18,435.70 : x
  2. Step 2: Convert to fraction form
    57,887.66/86,837.87 = 18,435.70/x
  3. Step 3: Cross multiply
    57,887.66x = 86,837.87 × 18,435.70
  4. Step 4: Simplify right side
    57,887.66x = 1,600,917,074.60
  5. Step 5: Solve for x
    x = 1,600,917,074.60/57,887.66
  6. Step 6: Final answer
    x = 27,655.58

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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.