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Finding the Fourth Proportional to 86,663.60, 130,019.70 and 36,767.60

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Solution

The fourth proportional to 86,663.60, 130,019.70 and 36,767.60 is: 55,161.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,663.60 : 130,019.70 = 36,767.60 : x
  2. Step 2: Convert to fraction form
    86,663.60/130,019.70 = 36,767.60/x
  3. Step 3: Cross multiply
    86,663.60x = 130,019.70 × 36,767.60
  4. Step 4: Simplify right side
    86,663.60x = 4,780,512,321.72
  5. Step 5: Solve for x
    x = 4,780,512,321.72/86,663.60
  6. Step 6: Final answer
    x = 55,161.71

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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.