Home / 81,422.60-112,350.11-51,186.51

Finding the Fourth Proportional to 81,422.60, 112,350.11 and 51,186.51

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Solution

The fourth proportional to 81,422.60, 112,350.11 and 51,186.51 is: 70,629.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,422.60 : 112,350.11 = 51,186.51 : x
  2. Step 2: Convert to fraction form
    81,422.60/112,350.11 = 51,186.51/x
  3. Step 3: Cross multiply
    81,422.60x = 112,350.11 × 51,186.51
  4. Step 4: Simplify right side
    81,422.60x = 5,750,809,773.08
  5. Step 5: Solve for x
    x = 5,750,809,773.08/81,422.60
  6. Step 6: Final answer
    x = 70,629.16

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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.