Home / 86,701.20-129,954.60-36,772.80

Finding the Fourth Proportional to 86,701.20, 129,954.60 and 36,772.80

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Solution

The fourth proportional to 86,701.20, 129,954.60 and 36,772.80 is: 55,117.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,701.20 : 129,954.60 = 36,772.80 : x
  2. Step 2: Convert to fraction form
    86,701.20/129,954.60 = 36,772.80/x
  3. Step 3: Cross multiply
    86,701.20x = 129,954.60 × 36,772.80
  4. Step 4: Simplify right side
    86,701.20x = 4,778,794,514.88
  5. Step 5: Solve for x
    x = 4,778,794,514.88/86,701.20
  6. Step 6: Final answer
    x = 55,117.97

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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.