Home / 72,836.84-109,255.28-20,246.78

Finding the Fourth Proportional to 72,836.84, 109,255.28 and 20,246.78

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Solution

The fourth proportional to 72,836.84, 109,255.28 and 20,246.78 is: 30,370.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,836.84 : 109,255.28 = 20,246.78 : x
  2. Step 2: Convert to fraction form
    72,836.84/109,255.28 = 20,246.78/x
  3. Step 3: Cross multiply
    72,836.84x = 109,255.28 × 20,246.78
  4. Step 4: Simplify right side
    72,836.84x = 2,212,066,970.49
  5. Step 5: Solve for x
    x = 2,212,066,970.49/72,836.84
  6. Step 6: Final answer
    x = 30,370.17

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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.