Home / 54,375.08-74,958.18-38,431.40

Finding the Fourth Proportional to 54,375.08, 74,958.18 and 38,431.40

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Solution

The fourth proportional to 54,375.08, 74,958.18 and 38,431.40 is: 52,979.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,375.08 : 74,958.18 = 38,431.40 : x
  2. Step 2: Convert to fraction form
    54,375.08/74,958.18 = 38,431.40/x
  3. Step 3: Cross multiply
    54,375.08x = 74,958.18 × 38,431.40
  4. Step 4: Simplify right side
    54,375.08x = 2,880,747,798.85
  5. Step 5: Solve for x
    x = 2,880,747,798.85/54,375.08
  6. Step 6: Final answer
    x = 52,979.19

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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.