Home / 72,845.28-109,262.88-28,463.52

Finding the Fourth Proportional to 72,845.28, 109,262.88 and 28,463.52

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Solution

The fourth proportional to 72,845.28, 109,262.88 and 28,463.52 is: 42,693.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,845.28 : 109,262.88 = 28,463.52 : x
  2. Step 2: Convert to fraction form
    72,845.28/109,262.88 = 28,463.52/x
  3. Step 3: Cross multiply
    72,845.28x = 109,262.88 × 28,463.52
  4. Step 4: Simplify right side
    72,845.28x = 3,110,006,170.14
  5. Step 5: Solve for x
    x = 3,110,006,170.14/72,845.28
  6. Step 6: Final answer
    x = 42,693.31

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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.