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Finding the Fourth Proportional to 54,361.99, 75,022.98 and 30,490.20

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Solution

The fourth proportional to 54,361.99, 75,022.98 and 30,490.20 is: 42,078.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,361.99 : 75,022.98 = 30,490.20 : x
  2. Step 2: Convert to fraction form
    54,361.99/75,022.98 = 30,490.20/x
  3. Step 3: Cross multiply
    54,361.99x = 75,022.98 × 30,490.20
  4. Step 4: Simplify right side
    54,361.99x = 2,287,465,596.72
  5. Step 5: Solve for x
    x = 2,287,465,596.72/54,361.99
  6. Step 6: Final answer
    x = 42,078.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.