Home / 75,128.41-103,747.44-48,317.47

Finding the Fourth Proportional to 75,128.41, 103,747.44 and 48,317.47

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Solution

The fourth proportional to 75,128.41, 103,747.44 and 48,317.47 is: 66,723.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,128.41 : 103,747.44 = 48,317.47 : x
  2. Step 2: Convert to fraction form
    75,128.41/103,747.44 = 48,317.47/x
  3. Step 3: Cross multiply
    75,128.41x = 103,747.44 × 48,317.47
  4. Step 4: Simplify right side
    75,128.41x = 5,012,813,819.78
  5. Step 5: Solve for x
    x = 5,012,813,819.78/75,128.41
  6. Step 6: Final answer
    x = 66,723.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.