Home / 82,635.12-114,091.38-63,480.78

Finding the Fourth Proportional to 82,635.12, 114,091.38 and 63,480.78

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Solution

The fourth proportional to 82,635.12, 114,091.38 and 63,480.78 is: 87,645.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,635.12 : 114,091.38 = 63,480.78 : x
  2. Step 2: Convert to fraction form
    82,635.12/114,091.38 = 63,480.78/x
  3. Step 3: Cross multiply
    82,635.12x = 114,091.38 × 63,480.78
  4. Step 4: Simplify right side
    82,635.12x = 7,242,609,793.68
  5. Step 5: Solve for x
    x = 7,242,609,793.68/82,635.12
  6. Step 6: Final answer
    x = 87,645.66

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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.