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Finding the Fourth Proportional to 71,108.79, 98,128.16 and 38,844.26

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Solution

The fourth proportional to 71,108.79, 98,128.16 and 38,844.26 is: 53,604.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,108.79 : 98,128.16 = 38,844.26 : x
  2. Step 2: Convert to fraction form
    71,108.79/98,128.16 = 38,844.26/x
  3. Step 3: Cross multiply
    71,108.79x = 98,128.16 × 38,844.26
  4. Step 4: Simplify right side
    71,108.79x = 3,811,715,589.15
  5. Step 5: Solve for x
    x = 3,811,715,589.15/71,108.79
  6. Step 6: Final answer
    x = 53,604.00

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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.