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Finding the Fourth Proportional to 86,665.60, 130,022.70 and 36,769.60

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Solution

The fourth proportional to 86,665.60, 130,022.70 and 36,769.60 is: 55,164.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,665.60 : 130,022.70 = 36,769.60 : x
  2. Step 2: Convert to fraction form
    86,665.60/130,022.70 = 36,769.60/x
  3. Step 3: Cross multiply
    86,665.60x = 130,022.70 × 36,769.60
  4. Step 4: Simplify right side
    86,665.60x = 4,780,882,669.92
  5. Step 5: Solve for x
    x = 4,780,882,669.92/86,665.60
  6. Step 6: Final answer
    x = 55,164.71

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1.5x scale

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.