Home / 81,489.56-112,460.32-45,691.09

Finding the Fourth Proportional to 81,489.56, 112,460.32 and 45,691.09

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Solution

The fourth proportional to 81,489.56, 112,460.32 and 45,691.09 is: 63,056.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,489.56 : 112,460.32 = 45,691.09 : x
  2. Step 2: Convert to fraction form
    81,489.56/112,460.32 = 45,691.09/x
  3. Step 3: Cross multiply
    81,489.56x = 112,460.32 × 45,691.09
  4. Step 4: Simplify right side
    81,489.56x = 5,138,434,488.32
  5. Step 5: Solve for x
    x = 5,138,434,488.32/81,489.56
  6. Step 6: Final answer
    x = 63,056.36

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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.