Home / 81,555.18-112,540.36-45,258.57

Finding the Fourth Proportional to 81,555.18, 112,540.36 and 45,258.57

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Solution

The fourth proportional to 81,555.18, 112,540.36 and 45,258.57 is: 62,453.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,555.18 : 112,540.36 = 45,258.57 : x
  2. Step 2: Convert to fraction form
    81,555.18/112,540.36 = 45,258.57/x
  3. Step 3: Cross multiply
    81,555.18x = 112,540.36 × 45,258.57
  4. Step 4: Simplify right side
    81,555.18x = 5,093,415,760.89
  5. Step 5: Solve for x
    x = 5,093,415,760.89/81,555.18
  6. Step 6: Final answer
    x = 62,453.61

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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.