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Finding the Fourth Proportional to 73,276.60, 109,902.60 and 20,673.76

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Solution

The fourth proportional to 73,276.60, 109,902.60 and 20,673.76 is: 31,007.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,276.60 : 109,902.60 = 20,673.76 : x
  2. Step 2: Convert to fraction form
    73,276.60/109,902.60 = 20,673.76/x
  3. Step 3: Cross multiply
    73,276.60x = 109,902.60 × 20,673.76
  4. Step 4: Simplify right side
    73,276.60x = 2,272,099,975.78
  5. Step 5: Solve for x
    x = 2,272,099,975.78/73,276.60
  6. Step 6: Final answer
    x = 31,007.17

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1.5x scale

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.