Home / 75,640.64-113,308.07-38,148.57

Finding the Fourth Proportional to 75,640.64, 113,308.07 and 38,148.57

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Solution

The fourth proportional to 75,640.64, 113,308.07 and 38,148.57 is: 57,145.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,640.64 : 113,308.07 = 38,148.57 : x
  2. Step 2: Convert to fraction form
    75,640.64/113,308.07 = 38,148.57/x
  3. Step 3: Cross multiply
    75,640.64x = 113,308.07 × 38,148.57
  4. Step 4: Simplify right side
    75,640.64x = 4,322,540,649.22
  5. Step 5: Solve for x
    x = 4,322,540,649.22/75,640.64
  6. Step 6: Final answer
    x = 57,145.75

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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.