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Finding the Fourth Proportional to 73,231.80, 109,847.70 and 72,713.40

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Solution

The fourth proportional to 73,231.80, 109,847.70 and 72,713.40 is: 109,070.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,231.80 : 109,847.70 = 72,713.40 : x
  2. Step 2: Convert to fraction form
    73,231.80/109,847.70 = 72,713.40/x
  3. Step 3: Cross multiply
    73,231.80x = 109,847.70 × 72,713.40
  4. Step 4: Simplify right side
    73,231.80x = 7,987,399,749.18
  5. Step 5: Solve for x
    x = 7,987,399,749.18/73,231.80
  6. Step 6: Final answer
    x = 109,070.10

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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.