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Finding the Fourth Proportional to 71,443.71, 107,157.97 and 29,328.21

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Solution

The fourth proportional to 71,443.71, 107,157.97 and 29,328.21 is: 43,989.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,443.71 : 107,157.97 = 29,328.21 : x
  2. Step 2: Convert to fraction form
    71,443.71/107,157.97 = 29,328.21/x
  3. Step 3: Cross multiply
    71,443.71x = 107,157.97 × 29,328.21
  4. Step 4: Simplify right side
    71,443.71x = 3,142,751,447.33
  5. Step 5: Solve for x
    x = 3,142,751,447.33/71,443.71
  6. Step 6: Final answer
    x = 43,989.20

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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.