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Finding the Fourth Proportional to 61,722, 85,176.36 and 33,427.69

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Solution

The fourth proportional to 61,722, 85,176.36 and 33,427.69 is: 46,130.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,722 : 85,176.36 = 33,427.69 : x
  2. Step 2: Convert to fraction form
    61,722/85,176.36 = 33,427.69/x
  3. Step 3: Cross multiply
    61,722x = 85,176.36 × 33,427.69
  4. Step 4: Simplify right side
    61,722x = 2,847,248,744.47
  5. Step 5: Solve for x
    x = 2,847,248,744.47/61,722
  6. Step 6: Final answer
    x = 46,130.21

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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.