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Finding the Fourth Proportional to 61,720, 85,174.04 and 33,425.72

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Solution

The fourth proportional to 61,720, 85,174.04 and 33,425.72 is: 46,127.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,720 : 85,174.04 = 33,425.72 : x
  2. Step 2: Convert to fraction form
    61,720/85,174.04 = 33,425.72/x
  3. Step 3: Cross multiply
    61,720x = 85,174.04 × 33,425.72
  4. Step 4: Simplify right side
    61,720x = 2,847,003,612.31
  5. Step 5: Solve for x
    x = 2,847,003,612.31/61,720
  6. Step 6: Final answer
    x = 46,127.73

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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.