Home / 86,049.35-129,029.70-38,623.79

Finding the Fourth Proportional to 86,049.35, 129,029.70 and 38,623.79

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Solution

The fourth proportional to 86,049.35, 129,029.70 and 38,623.79 is: 57,915.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,049.35 : 129,029.70 = 38,623.79 : x
  2. Step 2: Convert to fraction form
    86,049.35/129,029.70 = 38,623.79/x
  3. Step 3: Cross multiply
    86,049.35x = 129,029.70 × 38,623.79
  4. Step 4: Simplify right side
    86,049.35x = 4,983,615,391.41
  5. Step 5: Solve for x
    x = 4,983,615,391.41/86,049.35
  6. Step 6: Final answer
    x = 57,915.79

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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.