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Finding the Fourth Proportional to 109,372.40, 163,968.60 and 49,404.80

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Solution

The fourth proportional to 109,372.40, 163,968.60 and 49,404.80 is: 74,066.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,372.40 : 163,968.60 = 49,404.80 : x
  2. Step 2: Convert to fraction form
    109,372.40/163,968.60 = 49,404.80/x
  3. Step 3: Cross multiply
    109,372.40x = 163,968.60 × 49,404.80
  4. Step 4: Simplify right side
    109,372.40x = 8,100,835,889.28
  5. Step 5: Solve for x
    x = 8,100,835,889.28/109,372.40
  6. Step 6: Final answer
    x = 74,066.55

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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.