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Finding the Fourth Proportional to 71,783.99, 107,667.74 and 19,197.57

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Solution

The fourth proportional to 71,783.99, 107,667.74 and 19,197.57 is: 28,794.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,783.99 : 107,667.74 = 19,197.57 : x
  2. Step 2: Convert to fraction form
    71,783.99/107,667.74 = 19,197.57/x
  3. Step 3: Cross multiply
    71,783.99x = 107,667.74 × 19,197.57
  4. Step 4: Simplify right side
    71,783.99x = 2,066,958,879.40
  5. Step 5: Solve for x
    x = 2,066,958,879.40/71,783.99
  6. Step 6: Final answer
    x = 28,794.15

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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.