Home / 86,138.20-129,207.06-23,808.52

Finding the Fourth Proportional to 86,138.20, 129,207.06 and 23,808.52

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Solution

The fourth proportional to 86,138.20, 129,207.06 and 23,808.52 is: 35,712.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,138.20 : 129,207.06 = 23,808.52 : x
  2. Step 2: Convert to fraction form
    86,138.20/129,207.06 = 23,808.52/x
  3. Step 3: Cross multiply
    86,138.20x = 129,207.06 × 23,808.52
  4. Step 4: Simplify right side
    86,138.20x = 3,076,228,872.15
  5. Step 5: Solve for x
    x = 3,076,228,872.15/86,138.20
  6. Step 6: Final answer
    x = 35,712.71

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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.