Home / 75,128.62-103,682.46-43,299.55

Finding the Fourth Proportional to 75,128.62, 103,682.46 and 43,299.55

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Solution

The fourth proportional to 75,128.62, 103,682.46 and 43,299.55 is: 59,756.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,128.62 : 103,682.46 = 43,299.55 : x
  2. Step 2: Convert to fraction form
    75,128.62/103,682.46 = 43,299.55/x
  3. Step 3: Cross multiply
    75,128.62x = 103,682.46 × 43,299.55
  4. Step 4: Simplify right side
    75,128.62x = 4,489,403,860.89
  5. Step 5: Solve for x
    x = 4,489,403,860.89/75,128.62
  6. Step 6: Final answer
    x = 59,756.24

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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.