Home / 54,045.21-74,576.72-31,379.78

Finding the Fourth Proportional to 54,045.21, 74,576.72 and 31,379.78

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Solution

The fourth proportional to 54,045.21, 74,576.72 and 31,379.78 is: 43,300.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,045.21 : 74,576.72 = 31,379.78 : x
  2. Step 2: Convert to fraction form
    54,045.21/74,576.72 = 31,379.78/x
  3. Step 3: Cross multiply
    54,045.21x = 74,576.72 × 31,379.78
  4. Step 4: Simplify right side
    54,045.21x = 2,340,201,066.72
  5. Step 5: Solve for x
    x = 2,340,201,066.72/54,045.21
  6. Step 6: Final answer
    x = 43,300.80

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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.