Home / 54,128.05-74,699.11-30,254.72

Finding the Fourth Proportional to 54,128.05, 74,699.11 and 30,254.72

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Solution

The fourth proportional to 54,128.05, 74,699.11 and 30,254.72 is: 41,752.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,128.05 : 74,699.11 = 30,254.72 : x
  2. Step 2: Convert to fraction form
    54,128.05/74,699.11 = 30,254.72/x
  3. Step 3: Cross multiply
    54,128.05x = 74,699.11 × 30,254.72
  4. Step 4: Simplify right side
    54,128.05x = 2,260,000,321.62
  5. Step 5: Solve for x
    x = 2,260,000,321.62/54,128.05
  6. Step 6: Final answer
    x = 41,752.85

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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.