Home / 75,515.62-113,481-70,578.31

Finding the Fourth Proportional to 75,515.62, 113,481 and 70,578.31

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Solution

The fourth proportional to 75,515.62, 113,481 and 70,578.31 is: 106,061.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,515.62 : 113,481 = 70,578.31 : x
  2. Step 2: Convert to fraction form
    75,515.62/113,481 = 70,578.31/x
  3. Step 3: Cross multiply
    75,515.62x = 113,481 × 70,578.31
  4. Step 4: Simplify right side
    75,515.62x = 8,009,297,197.11
  5. Step 5: Solve for x
    x = 8,009,297,197.11/75,515.62
  6. Step 6: Final answer
    x = 106,061.46

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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.