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Finding the Fourth Proportional to 79,311.19, 109,455.01 and 45,324.70

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Solution

The fourth proportional to 79,311.19, 109,455.01 and 45,324.70 is: 62,551.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,311.19 : 109,455.01 = 45,324.70 : x
  2. Step 2: Convert to fraction form
    79,311.19/109,455.01 = 45,324.70/x
  3. Step 3: Cross multiply
    79,311.19x = 109,455.01 × 45,324.70
  4. Step 4: Simplify right side
    79,311.19x = 4,961,015,491.75
  5. Step 5: Solve for x
    x = 4,961,015,491.75/79,311.19
  6. Step 6: Final answer
    x = 62,551.27

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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.