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Finding the Fourth Proportional to 107,939.60, 161,909.40 and 37,809.80

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Solution

The fourth proportional to 107,939.60, 161,909.40 and 37,809.80 is: 56,714.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,939.60 : 161,909.40 = 37,809.80 : x
  2. Step 2: Convert to fraction form
    107,939.60/161,909.40 = 37,809.80/x
  3. Step 3: Cross multiply
    107,939.60x = 161,909.40 × 37,809.80
  4. Step 4: Simplify right side
    107,939.60x = 6,121,762,032.12
  5. Step 5: Solve for x
    x = 6,121,762,032.12/107,939.60
  6. Step 6: Final answer
    x = 56,714.70

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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.