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Finding the Fourth Proportional to 80,313.96, 110,885.28 and 51,646.50

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Solution

The fourth proportional to 80,313.96, 110,885.28 and 51,646.50 is: 71,305.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,313.96 : 110,885.28 = 51,646.50 : x
  2. Step 2: Convert to fraction form
    80,313.96/110,885.28 = 51,646.50/x
  3. Step 3: Cross multiply
    80,313.96x = 110,885.28 × 51,646.50
  4. Step 4: Simplify right side
    80,313.96x = 5,726,836,613.52
  5. Step 5: Solve for x
    x = 5,726,836,613.52/80,313.96
  6. Step 6: Final answer
    x = 71,305.62

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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.