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Finding the Fourth Proportional to 86,610.56, 130,123.20 and 55,506.56

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Solution

The fourth proportional to 86,610.56, 130,123.20 and 55,506.56 is: 83,392.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,610.56 : 130,123.20 = 55,506.56 : x
  2. Step 2: Convert to fraction form
    86,610.56/130,123.20 = 55,506.56/x
  3. Step 3: Cross multiply
    86,610.56x = 130,123.20 × 55,506.56
  4. Step 4: Simplify right side
    86,610.56x = 7,222,691,208.19
  5. Step 5: Solve for x
    x = 7,222,691,208.19/86,610.56
  6. Step 6: Final answer
    x = 83,392.73

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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.