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Finding the Fourth Proportional to 86,806.72, 130,216.56 and 36,881.20

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Solution

The fourth proportional to 86,806.72, 130,216.56 and 36,881.20 is: 55,324.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,806.72 : 130,216.56 = 36,881.20 : x
  2. Step 2: Convert to fraction form
    86,806.72/130,216.56 = 36,881.20/x
  3. Step 3: Cross multiply
    86,806.72x = 130,216.56 × 36,881.20
  4. Step 4: Simplify right side
    86,806.72x = 4,802,542,992.67
  5. Step 5: Solve for x
    x = 4,802,542,992.67/86,806.72
  6. Step 6: Final answer
    x = 55,324.55

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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.