Home / 81,560.52-112,496.85-66,453.21

Finding the Fourth Proportional to 81,560.52, 112,496.85 and 66,453.21

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Solution

The fourth proportional to 81,560.52, 112,496.85 and 66,453.21 is: 91,659.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,560.52 : 112,496.85 = 66,453.21 : x
  2. Step 2: Convert to fraction form
    81,560.52/112,496.85 = 66,453.21/x
  3. Step 3: Cross multiply
    81,560.52x = 112,496.85 × 66,453.21
  4. Step 4: Simplify right side
    81,560.52x = 7,475,776,797.39
  5. Step 5: Solve for x
    x = 7,475,776,797.39/81,560.52
  6. Step 6: Final answer
    x = 91,659.26

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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.