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Finding the Fourth Proportional to 71,361.13, 98,385.01 and 61,396.61

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Solution

The fourth proportional to 71,361.13, 98,385.01 and 61,396.61 is: 84,647.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,361.13 : 98,385.01 = 61,396.61 : x
  2. Step 2: Convert to fraction form
    71,361.13/98,385.01 = 61,396.61/x
  3. Step 3: Cross multiply
    71,361.13x = 98,385.01 × 61,396.61
  4. Step 4: Simplify right side
    71,361.13x = 6,040,505,781.83
  5. Step 5: Solve for x
    x = 6,040,505,781.83/71,361.13
  6. Step 6: Final answer
    x = 84,647.01

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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.