Home / 86,573.18-129,867.20-30,408.41

Finding the Fourth Proportional to 86,573.18, 129,867.20 and 30,408.41

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Solution

The fourth proportional to 86,573.18, 129,867.20 and 30,408.41 is: 45,615.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,573.18 : 129,867.20 = 30,408.41 : x
  2. Step 2: Convert to fraction form
    86,573.18/129,867.20 = 30,408.41/x
  3. Step 3: Cross multiply
    86,573.18x = 129,867.20 × 30,408.41
  4. Step 4: Simplify right side
    86,573.18x = 3,949,055,063.15
  5. Step 5: Solve for x
    x = 3,949,055,063.15/86,573.18
  6. Step 6: Final answer
    x = 45,615.22

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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.