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Finding the Fourth Proportional to 71,329.64, 107,012.26 and 21,410.66

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Solution

The fourth proportional to 71,329.64, 107,012.26 and 21,410.66 is: 32,121.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,329.64 : 107,012.26 = 21,410.66 : x
  2. Step 2: Convert to fraction form
    71,329.64/107,012.26 = 21,410.66/x
  3. Step 3: Cross multiply
    71,329.64x = 107,012.26 × 21,410.66
  4. Step 4: Simplify right side
    71,329.64x = 2,291,203,114.69
  5. Step 5: Solve for x
    x = 2,291,203,114.69/71,329.64
  6. Step 6: Final answer
    x = 32,121.33

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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.