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Finding the Fourth Proportional to 73,486.89, 101,412.60 and 39,953.61

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Solution

The fourth proportional to 73,486.89, 101,412.60 and 39,953.61 is: 55,136.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,486.89 : 101,412.60 = 39,953.61 : x
  2. Step 2: Convert to fraction form
    73,486.89/101,412.60 = 39,953.61/x
  3. Step 3: Cross multiply
    73,486.89x = 101,412.60 × 39,953.61
  4. Step 4: Simplify right side
    73,486.89x = 4,051,799,469.49
  5. Step 5: Solve for x
    x = 4,051,799,469.49/73,486.89
  6. Step 6: Final answer
    x = 55,136.36

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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.