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Finding the Fourth Proportional to 81,350.01, 112,261.91 and 45,540.01

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Solution

The fourth proportional to 81,350.01, 112,261.91 and 45,540.01 is: 62,844.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,350.01 : 112,261.91 = 45,540.01 : x
  2. Step 2: Convert to fraction form
    81,350.01/112,261.91 = 45,540.01/x
  3. Step 3: Cross multiply
    81,350.01x = 112,261.91 × 45,540.01
  4. Step 4: Simplify right side
    81,350.01x = 5,112,408,504.02
  5. Step 5: Solve for x
    x = 5,112,408,504.02/81,350.01
  6. Step 6: Final answer
    x = 62,844.60

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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.