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Finding the Fourth Proportional to 73,206.62, 100,991.60 and 42,991.40

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Solution

The fourth proportional to 73,206.62, 100,991.60 and 42,991.40 is: 59,308.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,206.62 : 100,991.60 = 42,991.40 : x
  2. Step 2: Convert to fraction form
    73,206.62/100,991.60 = 42,991.40/x
  3. Step 3: Cross multiply
    73,206.62x = 100,991.60 × 42,991.40
  4. Step 4: Simplify right side
    73,206.62x = 4,341,770,272.24
  5. Step 5: Solve for x
    x = 4,341,770,272.24/73,206.62
  6. Step 6: Final answer
    x = 59,308.44

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1.5x scale

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.