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Finding the Fourth Proportional to 107,939.60, 161,790.60 and 37,782.80

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Solution

The fourth proportional to 107,939.60, 161,790.60 and 37,782.80 is: 56,632.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,939.60 : 161,790.60 = 37,782.80 : x
  2. Step 2: Convert to fraction form
    107,939.60/161,790.60 = 37,782.80/x
  3. Step 3: Cross multiply
    107,939.60x = 161,790.60 × 37,782.80
  4. Step 4: Simplify right side
    107,939.60x = 6,112,901,881.68
  5. Step 5: Solve for x
    x = 6,112,901,881.68/107,939.60
  6. Step 6: Final answer
    x = 56,632.62

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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.