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Finding the Fourth Proportional to 71,369.64, 107,050.30 and 21,448.64

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Solution

The fourth proportional to 71,369.64, 107,050.30 and 21,448.64 is: 32,171.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,369.64 : 107,050.30 = 21,448.64 : x
  2. Step 2: Convert to fraction form
    71,369.64/107,050.30 = 21,448.64/x
  3. Step 3: Cross multiply
    71,369.64x = 107,050.30 × 21,448.64
  4. Step 4: Simplify right side
    71,369.64x = 2,296,083,346.59
  5. Step 5: Solve for x
    x = 2,296,083,346.59/71,369.64
  6. Step 6: Final answer
    x = 32,171.71

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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.