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Finding the Fourth Proportional to 81,365.98, 121,962.86 and 37,023.87

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Solution

The fourth proportional to 81,365.98, 121,962.86 and 37,023.87 is: 55,496.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,365.98 : 121,962.86 = 37,023.87 : x
  2. Step 2: Convert to fraction form
    81,365.98/121,962.86 = 37,023.87/x
  3. Step 3: Cross multiply
    81,365.98x = 121,962.86 × 37,023.87
  4. Step 4: Simplify right side
    81,365.98x = 4,515,536,888.35
  5. Step 5: Solve for x
    x = 4,515,536,888.35/81,365.98
  6. Step 6: Final answer
    x = 55,496.62

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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.