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Finding the Fourth Proportional to 72,580.36, 108,842.54 and 28,201.27

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Solution

The fourth proportional to 72,580.36, 108,842.54 and 28,201.27 is: 42,291.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,580.36 : 108,842.54 = 28,201.27 : x
  2. Step 2: Convert to fraction form
    72,580.36/108,842.54 = 28,201.27/x
  3. Step 3: Cross multiply
    72,580.36x = 108,842.54 × 28,201.27
  4. Step 4: Simplify right side
    72,580.36x = 3,069,497,858.03
  5. Step 5: Solve for x
    x = 3,069,497,858.03/72,580.36
  6. Step 6: Final answer
    x = 42,291.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.