Home / 81,258.82-112,137.47-45,446.55

Finding the Fourth Proportional to 81,258.82, 112,137.47 and 45,446.55

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Solution

The fourth proportional to 81,258.82, 112,137.47 and 45,446.55 is: 62,716.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,258.82 : 112,137.47 = 45,446.55 : x
  2. Step 2: Convert to fraction form
    81,258.82/112,137.47 = 45,446.55/x
  3. Step 3: Cross multiply
    81,258.82x = 112,137.47 × 45,446.55
  4. Step 4: Simplify right side
    81,258.82x = 5,096,260,659.90
  5. Step 5: Solve for x
    x = 5,096,260,659.90/81,258.82
  6. Step 6: Final answer
    x = 62,716.40

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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.