Home / 72,822.19-109,188.03-30,680.56

Finding the Fourth Proportional to 72,822.19, 109,188.03 and 30,680.56

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Solution

The fourth proportional to 72,822.19, 109,188.03 and 30,680.56 is: 46,001.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,822.19 : 109,188.03 = 30,680.56 : x
  2. Step 2: Convert to fraction form
    72,822.19/109,188.03 = 30,680.56/x
  3. Step 3: Cross multiply
    72,822.19x = 109,188.03 × 30,680.56
  4. Step 4: Simplify right side
    72,822.19x = 3,349,949,905.70
  5. Step 5: Solve for x
    x = 3,349,949,905.70/72,822.19
  6. Step 6: Final answer
    x = 46,001.77

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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.