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Finding the Fourth Proportional to 79,707.02, 109,995.17 and 43,896.78

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Solution

The fourth proportional to 79,707.02, 109,995.17 and 43,896.78 is: 60,577.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,707.02 : 109,995.17 = 43,896.78 : x
  2. Step 2: Convert to fraction form
    79,707.02/109,995.17 = 43,896.78/x
  3. Step 3: Cross multiply
    79,707.02x = 109,995.17 × 43,896.78
  4. Step 4: Simplify right side
    79,707.02x = 4,828,433,559.07
  5. Step 5: Solve for x
    x = 4,828,433,559.07/79,707.02
  6. Step 6: Final answer
    x = 60,577.27

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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.