Home / 71,688.58-107,562.26-31,686.41

Finding the Fourth Proportional to 71,688.58, 107,562.26 and 31,686.41

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Solution

The fourth proportional to 71,688.58, 107,562.26 and 31,686.41 is: 47,542.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,688.58 : 107,562.26 = 31,686.41 : x
  2. Step 2: Convert to fraction form
    71,688.58/107,562.26 = 31,686.41/x
  3. Step 3: Cross multiply
    71,688.58x = 107,562.26 × 31,686.41
  4. Step 4: Simplify right side
    71,688.58x = 3,408,262,219.01
  5. Step 5: Solve for x
    x = 3,408,262,219.01/71,688.58
  6. Step 6: Final answer
    x = 47,542.61

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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.