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Finding the Fourth Proportional to 69,021.68, 103,500.12 and 31,571.12

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Solution

The fourth proportional to 69,021.68, 103,500.12 and 31,571.12 is: 47,341.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,021.68 : 103,500.12 = 31,571.12 : x
  2. Step 2: Convert to fraction form
    69,021.68/103,500.12 = 31,571.12/x
  3. Step 3: Cross multiply
    69,021.68x = 103,500.12 × 31,571.12
  4. Step 4: Simplify right side
    69,021.68x = 3,267,614,708.53
  5. Step 5: Solve for x
    x = 3,267,614,708.53/69,021.68
  6. Step 6: Final answer
    x = 47,341.86

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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.