Home / 49,817.76-68,749.68-30,690.48

Finding the Fourth Proportional to 49,817.76, 68,749.68 and 30,690.48

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Solution

The fourth proportional to 49,817.76, 68,749.68 and 30,690.48 is: 42,353.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,817.76 : 68,749.68 = 30,690.48 : x
  2. Step 2: Convert to fraction form
    49,817.76/68,749.68 = 30,690.48/x
  3. Step 3: Cross multiply
    49,817.76x = 68,749.68 × 30,690.48
  4. Step 4: Simplify right side
    49,817.76x = 2,109,960,679.05
  5. Step 5: Solve for x
    x = 2,109,960,679.05/49,817.76
  6. Step 6: Final answer
    x = 42,353.58

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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.