Home / 86,578.20-129,880.80-27,408.24

Finding the Fourth Proportional to 86,578.20, 129,880.80 and 27,408.24

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Solution

The fourth proportional to 86,578.20, 129,880.80 and 27,408.24 is: 41,116.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,578.20 : 129,880.80 = 27,408.24 : x
  2. Step 2: Convert to fraction form
    86,578.20/129,880.80 = 27,408.24/x
  3. Step 3: Cross multiply
    86,578.20x = 129,880.80 × 27,408.24
  4. Step 4: Simplify right side
    86,578.20x = 3,559,804,137.79
  5. Step 5: Solve for x
    x = 3,559,804,137.79/86,578.20
  6. Step 6: Final answer
    x = 41,116.63

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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.