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Finding the Fourth Proportional to 81,175.44, 112,019.88 and 45,365.70

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Solution

The fourth proportional to 81,175.44, 112,019.88 and 45,365.70 is: 62,603.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,175.44 : 112,019.88 = 45,365.70 : x
  2. Step 2: Convert to fraction form
    81,175.44/112,019.88 = 45,365.70/x
  3. Step 3: Cross multiply
    81,175.44x = 112,019.88 × 45,365.70
  4. Step 4: Simplify right side
    81,175.44x = 5,081,860,270.12
  5. Step 5: Solve for x
    x = 5,081,860,270.12/81,175.44
  6. Step 6: Final answer
    x = 62,603.42

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1.5x scale

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.