Home / 82,947.36-124,421.12-20,617.86

Finding the Fourth Proportional to 82,947.36, 124,421.12 and 20,617.86

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Solution

The fourth proportional to 82,947.36, 124,421.12 and 20,617.86 is: 30,926.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,947.36 : 124,421.12 = 20,617.86 : x
  2. Step 2: Convert to fraction form
    82,947.36/124,421.12 = 20,617.86/x
  3. Step 3: Cross multiply
    82,947.36x = 124,421.12 × 20,617.86
  4. Step 4: Simplify right side
    82,947.36x = 2,565,297,233.20
  5. Step 5: Solve for x
    x = 2,565,297,233.20/82,947.36
  6. Step 6: Final answer
    x = 30,926.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.