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Finding the Fourth Proportional to 61,912, 85,440.16 and 33,617.68

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Solution

The fourth proportional to 61,912, 85,440.16 and 33,617.68 is: 46,393.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,912 : 85,440.16 = 33,617.68 : x
  2. Step 2: Convert to fraction form
    61,912/85,440.16 = 33,617.68/x
  3. Step 3: Cross multiply
    61,912x = 85,440.16 × 33,617.68
  4. Step 4: Simplify right side
    61,912x = 2,872,299,958.03
  5. Step 5: Solve for x
    x = 2,872,299,958.03/61,912
  6. Step 6: Final answer
    x = 46,393.27

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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.