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Finding the Fourth Proportional to 54,998.40, 82,400.40 and 51,499.20

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Solution

The fourth proportional to 54,998.40, 82,400.40 and 51,499.20 is: 77,157.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,998.40 : 82,400.40 = 51,499.20 : x
  2. Step 2: Convert to fraction form
    54,998.40/82,400.40 = 51,499.20/x
  3. Step 3: Cross multiply
    54,998.40x = 82,400.40 × 51,499.20
  4. Step 4: Simplify right side
    54,998.40x = 4,243,554,679.68
  5. Step 5: Solve for x
    x = 4,243,554,679.68/54,998.40
  6. Step 6: Final answer
    x = 77,157.78

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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.