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Finding the Fourth Proportional to 72,165.26, 99,584.04 and 39,898.00

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Solution

The fourth proportional to 72,165.26, 99,584.04 and 39,898.00 is: 55,057.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,165.26 : 99,584.04 = 39,898.00 : x
  2. Step 2: Convert to fraction form
    72,165.26/99,584.04 = 39,898.00/x
  3. Step 3: Cross multiply
    72,165.26x = 99,584.04 × 39,898.00
  4. Step 4: Simplify right side
    72,165.26x = 3,973,204,077.59
  5. Step 5: Solve for x
    x = 3,973,204,077.59/72,165.26
  6. Step 6: Final answer
    x = 55,057.02

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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.