Home / 79,319.04-109,481.28-49,086.72

Finding the Fourth Proportional to 79,319.04, 109,481.28 and 49,086.72

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Solution

The fourth proportional to 79,319.04, 109,481.28 and 49,086.72 is: 67,752.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,319.04 : 109,481.28 = 49,086.72 : x
  2. Step 2: Convert to fraction form
    79,319.04/109,481.28 = 49,086.72/x
  3. Step 3: Cross multiply
    79,319.04x = 109,481.28 × 49,086.72
  4. Step 4: Simplify right side
    79,319.04x = 5,374,076,936.60
  5. Step 5: Solve for x
    x = 5,374,076,936.60/79,319.04
  6. Step 6: Final answer
    x = 67,752.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.