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Finding the Fourth Proportional to 80,502.84, 120,471.75 and 64,668.96

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Solution

The fourth proportional to 80,502.84, 120,471.75 and 64,668.96 is: 96,776.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,502.84 : 120,471.75 = 64,668.96 : x
  2. Step 2: Convert to fraction form
    80,502.84/120,471.75 = 64,668.96/x
  3. Step 3: Cross multiply
    80,502.84x = 120,471.75 × 64,668.96
  4. Step 4: Simplify right side
    80,502.84x = 7,790,782,781.88
  5. Step 5: Solve for x
    x = 7,790,782,781.88/80,502.84
  6. Step 6: Final answer
    x = 96,776.50

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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.