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Finding the Fourth Proportional to 71,487.72, 107,232.30 and 21,568.23

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Solution

The fourth proportional to 71,487.72, 107,232.30 and 21,568.23 is: 32,352.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,487.72 : 107,232.30 = 21,568.23 : x
  2. Step 2: Convert to fraction form
    71,487.72/107,232.30 = 21,568.23/x
  3. Step 3: Cross multiply
    71,487.72x = 107,232.30 × 21,568.23
  4. Step 4: Simplify right side
    71,487.72x = 2,312,810,909.83
  5. Step 5: Solve for x
    x = 2,312,810,909.83/71,487.72
  6. Step 6: Final answer
    x = 32,352.56

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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.