Home / 75,721.41-113,605.74-31,369.05

Finding the Fourth Proportional to 75,721.41, 113,605.74 and 31,369.05

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Solution

The fourth proportional to 75,721.41, 113,605.74 and 31,369.05 is: 47,063.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,721.41 : 113,605.74 = 31,369.05 : x
  2. Step 2: Convert to fraction form
    75,721.41/113,605.74 = 31,369.05/x
  3. Step 3: Cross multiply
    75,721.41x = 113,605.74 × 31,369.05
  4. Step 4: Simplify right side
    75,721.41x = 3,563,704,138.35
  5. Step 5: Solve for x
    x = 3,563,704,138.35/75,721.41
  6. Step 6: Final answer
    x = 47,063.36

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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.