Home / 80,961.60-111,682.08-47,421.12

Finding the Fourth Proportional to 80,961.60, 111,682.08 and 47,421.12

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Solution

The fourth proportional to 80,961.60, 111,682.08 and 47,421.12 is: 65,414.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,961.60 : 111,682.08 = 47,421.12 : x
  2. Step 2: Convert to fraction form
    80,961.60/111,682.08 = 47,421.12/x
  3. Step 3: Cross multiply
    80,961.60x = 111,682.08 × 47,421.12
  4. Step 4: Simplify right side
    80,961.60x = 5,296,089,317.53
  5. Step 5: Solve for x
    x = 5,296,089,317.53/80,961.60
  6. Step 6: Final answer
    x = 65,414.83

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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.