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Finding the Fourth Proportional to 61,505.22, 84,891 and 40,272.14

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Solution

The fourth proportional to 61,505.22, 84,891 and 40,272.14 is: 55,584.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,505.22 : 84,891 = 40,272.14 : x
  2. Step 2: Convert to fraction form
    61,505.22/84,891 = 40,272.14/x
  3. Step 3: Cross multiply
    61,505.22x = 84,891 × 40,272.14
  4. Step 4: Simplify right side
    61,505.22x = 3,418,742,236.74
  5. Step 5: Solve for x
    x = 3,418,742,236.74/61,505.22
  6. Step 6: Final answer
    x = 55,584.59

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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.