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Finding the Fourth Proportional to 84,028.98, 115,958.50 and 45,788.86

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Solution

The fourth proportional to 84,028.98, 115,958.50 and 45,788.86 is: 63,187.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,028.98 : 115,958.50 = 45,788.86 : x
  2. Step 2: Convert to fraction form
    84,028.98/115,958.50 = 45,788.86/x
  3. Step 3: Cross multiply
    84,028.98x = 115,958.50 × 45,788.86
  4. Step 4: Simplify right side
    84,028.98x = 5,309,607,494.88
  5. Step 5: Solve for x
    x = 5,309,607,494.88/84,028.98
  6. Step 6: Final answer
    x = 63,187.81

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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.