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Finding the Fourth Proportional to 71,646.30, 107,469.45 and 19,061.10

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Solution

The fourth proportional to 71,646.30, 107,469.45 and 19,061.10 is: 28,591.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,646.30 : 107,469.45 = 19,061.10 : x
  2. Step 2: Convert to fraction form
    71,646.30/107,469.45 = 19,061.10/x
  3. Step 3: Cross multiply
    71,646.30x = 107,469.45 × 19,061.10
  4. Step 4: Simplify right side
    71,646.30x = 2,048,485,933.40
  5. Step 5: Solve for x
    x = 2,048,485,933.40/71,646.30
  6. Step 6: Final answer
    x = 28,591.65

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Similar ratio
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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.