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Finding the Fourth Proportional to 61,425, 84,767.46 and 39,099.24

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Solution

The fourth proportional to 61,425, 84,767.46 and 39,099.24 is: 53,957.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,425 : 84,767.46 = 39,099.24 : x
  2. Step 2: Convert to fraction form
    61,425/84,767.46 = 39,099.24/x
  3. Step 3: Cross multiply
    61,425x = 84,767.46 × 39,099.24
  4. Step 4: Simplify right side
    61,425x = 3,314,343,262.73
  5. Step 5: Solve for x
    x = 3,314,343,262.73/61,425
  6. Step 6: Final answer
    x = 53,957.56

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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.