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Finding the Fourth Proportional to 79,507.86, 119,261.18 and 20,343.44

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Solution

The fourth proportional to 79,507.86, 119,261.18 and 20,343.44 is: 30,515.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,507.86 : 119,261.18 = 20,343.44 : x
  2. Step 2: Convert to fraction form
    79,507.86/119,261.18 = 20,343.44/x
  3. Step 3: Cross multiply
    79,507.86x = 119,261.18 × 20,343.44
  4. Step 4: Simplify right side
    79,507.86x = 2,426,181,961.64
  5. Step 5: Solve for x
    x = 2,426,181,961.64/79,507.86
  6. Step 6: Final answer
    x = 30,515.00

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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.