Home / 71,429.22-107,135.19-18,842.67

Finding the Fourth Proportional to 71,429.22, 107,135.19 and 18,842.67

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Solution

The fourth proportional to 71,429.22, 107,135.19 and 18,842.67 is: 28,261.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,429.22 : 107,135.19 = 18,842.67 : x
  2. Step 2: Convert to fraction form
    71,429.22/107,135.19 = 18,842.67/x
  3. Step 3: Cross multiply
    71,429.22x = 107,135.19 × 18,842.67
  4. Step 4: Simplify right side
    71,429.22x = 2,018,713,030.56
  5. Step 5: Solve for x
    x = 2,018,713,030.56/71,429.22
  6. Step 6: Final answer
    x = 28,261.73

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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.