Home / 54,450-74,907.72-52,117.20

Finding the Fourth Proportional to 54,450, 74,907.72 and 52,117.20

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Solution

The fourth proportional to 54,450, 74,907.72 and 52,117.20 is: 71,698.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,450 : 74,907.72 = 52,117.20 : x
  2. Step 2: Convert to fraction form
    54,450/74,907.72 = 52,117.20/x
  3. Step 3: Cross multiply
    54,450x = 74,907.72 × 52,117.20
  4. Step 4: Simplify right side
    54,450x = 3,903,980,624.78
  5. Step 5: Solve for x
    x = 3,903,980,624.78/54,450
  6. Step 6: Final answer
    x = 71,698.45

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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.