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Finding the Fourth Proportional to 80,355.85, 110,903.38 and 51,296.78

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Solution

The fourth proportional to 80,355.85, 110,903.38 and 51,296.78 is: 70,797.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,355.85 : 110,903.38 = 51,296.78 : x
  2. Step 2: Convert to fraction form
    80,355.85/110,903.38 = 51,296.78/x
  3. Step 3: Cross multiply
    80,355.85x = 110,903.38 × 51,296.78
  4. Step 4: Simplify right side
    80,355.85x = 5,688,986,434.13
  5. Step 5: Solve for x
    x = 5,688,986,434.13/80,355.85
  6. Step 6: Final answer
    x = 70,797.42

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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.