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Finding the Fourth Proportional to 72,804.06, 100,469.39 and 40,973.00

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Solution

The fourth proportional to 72,804.06, 100,469.39 and 40,973.00 is: 56,542.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,804.06 : 100,469.39 = 40,973.00 : x
  2. Step 2: Convert to fraction form
    72,804.06/100,469.39 = 40,973.00/x
  3. Step 3: Cross multiply
    72,804.06x = 100,469.39 × 40,973.00
  4. Step 4: Simplify right side
    72,804.06x = 4,116,531,609.26
  5. Step 5: Solve for x
    x = 4,116,531,609.26/72,804.06
  6. Step 6: Final answer
    x = 56,542.61

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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.