Home / 81,368.58-112,286.34-45,561.72

Finding the Fourth Proportional to 81,368.58, 112,286.34 and 45,561.72

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Solution

The fourth proportional to 81,368.58, 112,286.34 and 45,561.72 is: 62,873.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,368.58 : 112,286.34 = 45,561.72 : x
  2. Step 2: Convert to fraction form
    81,368.58/112,286.34 = 45,561.72/x
  3. Step 3: Cross multiply
    81,368.58x = 112,286.34 × 45,561.72
  4. Step 4: Simplify right side
    81,368.58x = 5,115,958,782.90
  5. Step 5: Solve for x
    x = 5,115,958,782.90/81,368.58
  6. Step 6: Final answer
    x = 62,873.89

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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.