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Finding the Fourth Proportional to 54,783.99, 82,176.09 and 13,230.99

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Solution

The fourth proportional to 54,783.99, 82,176.09 and 13,230.99 is: 19,846.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,783.99 : 82,176.09 = 13,230.99 : x
  2. Step 2: Convert to fraction form
    54,783.99/82,176.09 = 13,230.99/x
  3. Step 3: Cross multiply
    54,783.99x = 82,176.09 × 13,230.99
  4. Step 4: Simplify right side
    54,783.99x = 1,087,271,025.03
  5. Step 5: Solve for x
    x = 1,087,271,025.03/54,783.99
  6. Step 6: Final answer
    x = 19,846.51

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Double scale
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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.