Home / 71,403.30-107,002.35-40,172.58

Finding the Fourth Proportional to 71,403.30, 107,002.35 and 40,172.58

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Solution

The fourth proportional to 71,403.30, 107,002.35 and 40,172.58 is: 60,201.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,403.30 : 107,002.35 = 40,172.58 : x
  2. Step 2: Convert to fraction form
    71,403.30/107,002.35 = 40,172.58/x
  3. Step 3: Cross multiply
    71,403.30x = 107,002.35 × 40,172.58
  4. Step 4: Simplify right side
    71,403.30x = 4,298,560,465.56
  5. Step 5: Solve for x
    x = 4,298,560,465.56/71,403.30
  6. Step 6: Final answer
    x = 60,201.15

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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.