Home / 75,138.67-103,691.37-43,309.62

Finding the Fourth Proportional to 75,138.67, 103,691.37 and 43,309.62

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Solution

The fourth proportional to 75,138.67, 103,691.37 and 43,309.62 is: 59,767.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,138.67 : 103,691.37 = 43,309.62 : x
  2. Step 2: Convert to fraction form
    75,138.67/103,691.37 = 43,309.62/x
  3. Step 3: Cross multiply
    75,138.67x = 103,691.37 × 43,309.62
  4. Step 4: Simplify right side
    75,138.67x = 4,490,833,831.98
  5. Step 5: Solve for x
    x = 4,490,833,831.98/75,138.67
  6. Step 6: Final answer
    x = 59,767.28

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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.