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Finding the Fourth Proportional to 86,719.67, 130,076.53 and 36,767.60

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Solution

The fourth proportional to 86,719.67, 130,076.53 and 36,767.60 is: 55,150.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,719.67 : 130,076.53 = 36,767.60 : x
  2. Step 2: Convert to fraction form
    86,719.67/130,076.53 = 36,767.60/x
  3. Step 3: Cross multiply
    86,719.67x = 130,076.53 × 36,767.60
  4. Step 4: Simplify right side
    86,719.67x = 4,782,601,082.13
  5. Step 5: Solve for x
    x = 4,782,601,082.13/86,719.67
  6. Step 6: Final answer
    x = 55,150.13

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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.