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Finding the Fourth Proportional to 71,611.81, 107,315.87 and 52,743.47

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Solution

The fourth proportional to 71,611.81, 107,315.87 and 52,743.47 is: 79,040.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,611.81 : 107,315.87 = 52,743.47 : x
  2. Step 2: Convert to fraction form
    71,611.81/107,315.87 = 52,743.47/x
  3. Step 3: Cross multiply
    71,611.81x = 107,315.87 × 52,743.47
  4. Step 4: Simplify right side
    71,611.81x = 5,660,210,965.15
  5. Step 5: Solve for x
    x = 5,660,210,965.15/71,611.81
  6. Step 6: Final answer
    x = 79,040.19

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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.