Home / 81,535.14-112,546.13-51,371.01

Finding the Fourth Proportional to 81,535.14, 112,546.13 and 51,371.01

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Solution

The fourth proportional to 81,535.14, 112,546.13 and 51,371.01 is: 70,909.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,535.14 : 112,546.13 = 51,371.01 : x
  2. Step 2: Convert to fraction form
    81,535.14/112,546.13 = 51,371.01/x
  3. Step 3: Cross multiply
    81,535.14x = 112,546.13 × 51,371.01
  4. Step 4: Simplify right side
    81,535.14x = 5,781,608,112.84
  5. Step 5: Solve for x
    x = 5,781,608,112.84/81,535.14
  6. Step 6: Final answer
    x = 70,909.40

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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.