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Finding the Fourth Proportional to 73,011.96, 109,517.94 and 28,659.60

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Solution

The fourth proportional to 73,011.96, 109,517.94 and 28,659.60 is: 42,989.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,011.96 : 109,517.94 = 28,659.60 : x
  2. Step 2: Convert to fraction form
    73,011.96/109,517.94 = 28,659.60/x
  3. Step 3: Cross multiply
    73,011.96x = 109,517.94 × 28,659.60
  4. Step 4: Simplify right side
    73,011.96x = 3,138,740,353.22
  5. Step 5: Solve for x
    x = 3,138,740,353.22/73,011.96
  6. Step 6: Final answer
    x = 42,989.40

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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.