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Finding the Fourth Proportional to 80,420.11, 110,984.72 and 46,434.80

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Solution

The fourth proportional to 80,420.11, 110,984.72 and 46,434.80 is: 64,082.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,420.11 : 110,984.72 = 46,434.80 : x
  2. Step 2: Convert to fraction form
    80,420.11/110,984.72 = 46,434.80/x
  3. Step 3: Cross multiply
    80,420.11x = 110,984.72 × 46,434.80
  4. Step 4: Simplify right side
    80,420.11x = 5,153,553,321.54
  5. Step 5: Solve for x
    x = 5,153,553,321.54/80,420.11
  6. Step 6: Final answer
    x = 64,082.90

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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.