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Finding the Fourth Proportional to 72,922.43, 109,374.44 and 28,580.33

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Solution

The fourth proportional to 72,922.43, 109,374.44 and 28,580.33 is: 42,866.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,922.43 : 109,374.44 = 28,580.33 : x
  2. Step 2: Convert to fraction form
    72,922.43/109,374.44 = 28,580.33/x
  3. Step 3: Cross multiply
    72,922.43x = 109,374.44 × 28,580.33
  4. Step 4: Simplify right side
    72,922.43x = 3,125,957,719.30
  5. Step 5: Solve for x
    x = 3,125,957,719.30/72,922.43
  6. Step 6: Final answer
    x = 42,866.89

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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.