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Finding the Fourth Proportional to 81,452.58, 112,410.87 and 45,645.92

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Solution

The fourth proportional to 81,452.58, 112,410.87 and 45,645.92 is: 62,994.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,452.58 : 112,410.87 = 45,645.92 : x
  2. Step 2: Convert to fraction form
    81,452.58/112,410.87 = 45,645.92/x
  3. Step 3: Cross multiply
    81,452.58x = 112,410.87 × 45,645.92
  4. Step 4: Simplify right side
    81,452.58x = 5,131,097,689.01
  5. Step 5: Solve for x
    x = 5,131,097,689.01/81,452.58
  6. Step 6: Final answer
    x = 62,994.91

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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.