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Finding the Fourth Proportional to 87,887.82, 121,158.87 and 62,693.58

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Solution

The fourth proportional to 87,887.82, 121,158.87 and 62,693.58 is: 86,427.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,887.82 : 121,158.87 = 62,693.58 : x
  2. Step 2: Convert to fraction form
    87,887.82/121,158.87 = 62,693.58/x
  3. Step 3: Cross multiply
    87,887.82x = 121,158.87 × 62,693.58
  4. Step 4: Simplify right side
    87,887.82x = 7,595,883,309.05
  5. Step 5: Solve for x
    x = 7,595,883,309.05/87,887.82
  6. Step 6: Final answer
    x = 86,427.03

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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.