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Finding the Fourth Proportional to 86,573.48, 129,867.57 and 30,408.68

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Solution

The fourth proportional to 86,573.48, 129,867.57 and 30,408.68 is: 45,615.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,573.48 : 129,867.57 = 30,408.68 : x
  2. Step 2: Convert to fraction form
    86,573.48/129,867.57 = 30,408.68/x
  3. Step 3: Cross multiply
    86,573.48x = 129,867.57 × 30,408.68
  4. Step 4: Simplify right side
    86,573.48x = 3,949,101,703.18
  5. Step 5: Solve for x
    x = 3,949,101,703.18/86,573.48
  6. Step 6: Final answer
    x = 45,615.61

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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.