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Finding the Fourth Proportional to 81,202.77, 112,060.62 and 45,394.74

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Solution

The fourth proportional to 81,202.77, 112,060.62 and 45,394.74 is: 62,645.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,202.77 : 112,060.62 = 45,394.74 : x
  2. Step 2: Convert to fraction form
    81,202.77/112,060.62 = 45,394.74/x
  3. Step 3: Cross multiply
    81,202.77x = 112,060.62 × 45,394.74
  4. Step 4: Simplify right side
    81,202.77x = 5,086,962,709.14
  5. Step 5: Solve for x
    x = 5,086,962,709.14/81,202.77
  6. Step 6: Final answer
    x = 62,645.19

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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.