Home / 54,396.38-81,719.64-38,639.72

Finding the Fourth Proportional to 54,396.38, 81,719.64 and 38,639.72

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Solution

The fourth proportional to 54,396.38, 81,719.64 and 38,639.72 is: 58,048.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,396.38 : 81,719.64 = 38,639.72 : x
  2. Step 2: Convert to fraction form
    54,396.38/81,719.64 = 38,639.72/x
  3. Step 3: Cross multiply
    54,396.38x = 81,719.64 × 38,639.72
  4. Step 4: Simplify right side
    54,396.38x = 3,157,623,599.50
  5. Step 5: Solve for x
    x = 3,157,623,599.50/54,396.38
  6. Step 6: Final answer
    x = 58,048.42

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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.