Home / 81,147.42-112,025.43-55,953.18

Finding the Fourth Proportional to 81,147.42, 112,025.43 and 55,953.18

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Solution

The fourth proportional to 81,147.42, 112,025.43 and 55,953.18 is: 77,244.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,147.42 : 112,025.43 = 55,953.18 : x
  2. Step 2: Convert to fraction form
    81,147.42/112,025.43 = 55,953.18/x
  3. Step 3: Cross multiply
    81,147.42x = 112,025.43 × 55,953.18
  4. Step 4: Simplify right side
    81,147.42x = 6,268,179,049.37
  5. Step 5: Solve for x
    x = 6,268,179,049.37/81,147.42
  6. Step 6: Final answer
    x = 77,244.34

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Double scale
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Similar ratio
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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.