Home / 71,725.12-107,357.64-38,361.76

Finding the Fourth Proportional to 71,725.12, 107,357.64 and 38,361.76

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Solution

The fourth proportional to 71,725.12, 107,357.64 and 38,361.76 is: 57,419.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,725.12 : 107,357.64 = 38,361.76 : x
  2. Step 2: Convert to fraction form
    71,725.12/107,357.64 = 38,361.76/x
  3. Step 3: Cross multiply
    71,725.12x = 107,357.64 × 38,361.76
  4. Step 4: Simplify right side
    71,725.12x = 4,118,428,019.85
  5. Step 5: Solve for x
    x = 4,118,428,019.85/71,725.12
  6. Step 6: Final answer
    x = 57,419.60

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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.