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Finding the Fourth Proportional to 79,499.80, 109,707.72 and 43,199.64

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Solution

The fourth proportional to 79,499.80, 109,707.72 and 43,199.64 is: 59,614.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,499.80 : 109,707.72 = 43,199.64 : x
  2. Step 2: Convert to fraction form
    79,499.80/109,707.72 = 43,199.64/x
  3. Step 3: Cross multiply
    79,499.80x = 109,707.72 × 43,199.64
  4. Step 4: Simplify right side
    79,499.80x = 4,739,334,009.22
  5. Step 5: Solve for x
    x = 4,739,334,009.22/79,499.80
  6. Step 6: Final answer
    x = 59,614.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.