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Finding the Fourth Proportional to 80,613.24, 120,904.10 and 76,612.50

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Solution

The fourth proportional to 80,613.24, 120,904.10 and 76,612.50 is: 114,903.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,613.24 : 120,904.10 = 76,612.50 : x
  2. Step 2: Convert to fraction form
    80,613.24/120,904.10 = 76,612.50/x
  3. Step 3: Cross multiply
    80,613.24x = 120,904.10 × 76,612.50
  4. Step 4: Simplify right side
    80,613.24x = 9,262,765,361.25
  5. Step 5: Solve for x
    x = 9,262,765,361.25/80,613.24
  6. Step 6: Final answer
    x = 114,903.77

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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.