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Finding the Fourth Proportional to 71,783.62, 107,667.20 and 19,197.20

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Solution

The fourth proportional to 71,783.62, 107,667.20 and 19,197.20 is: 28,793.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,783.62 : 107,667.20 = 19,197.20 : x
  2. Step 2: Convert to fraction form
    71,783.62/107,667.20 = 19,197.20/x
  3. Step 3: Cross multiply
    71,783.62x = 107,667.20 × 19,197.20
  4. Step 4: Simplify right side
    71,783.62x = 2,066,909,089.00
  5. Step 5: Solve for x
    x = 2,066,909,089.00/71,783.62
  6. Step 6: Final answer
    x = 28,793.60

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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.