Home / 71,980.14-107,766.63-38,169.12

Finding the Fourth Proportional to 71,980.14, 107,766.63 and 38,169.12

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Solution

The fourth proportional to 71,980.14, 107,766.63 and 38,169.12 is: 57,145.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,980.14 : 107,766.63 = 38,169.12 : x
  2. Step 2: Convert to fraction form
    71,980.14/107,766.63 = 38,169.12/x
  3. Step 3: Cross multiply
    71,980.14x = 107,766.63 × 38,169.12
  4. Step 4: Simplify right side
    71,980.14x = 4,113,357,432.47
  5. Step 5: Solve for x
    x = 4,113,357,432.47/71,980.14
  6. Step 6: Final answer
    x = 57,145.73

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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.