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Finding the Fourth Proportional to 71,555.08, 98,744.52 and 39,722.08

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Solution

The fourth proportional to 71,555.08, 98,744.52 and 39,722.08 is: 54,815.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,555.08 : 98,744.52 = 39,722.08 : x
  2. Step 2: Convert to fraction form
    71,555.08/98,744.52 = 39,722.08/x
  3. Step 3: Cross multiply
    71,555.08x = 98,744.52 × 39,722.08
  4. Step 4: Simplify right side
    71,555.08x = 3,922,337,723.00
  5. Step 5: Solve for x
    x = 3,922,337,723.00/71,555.08
  6. Step 6: Final answer
    x = 54,815.64

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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.