Home / 54,109.78-81,172.74-16,666.72

Finding the Fourth Proportional to 54,109.78, 81,172.74 and 16,666.72

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Solution

The fourth proportional to 54,109.78, 81,172.74 and 16,666.72 is: 25,002.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,109.78 : 81,172.74 = 16,666.72 : x
  2. Step 2: Convert to fraction form
    54,109.78/81,172.74 = 16,666.72/x
  3. Step 3: Cross multiply
    54,109.78x = 81,172.74 × 16,666.72
  4. Step 4: Simplify right side
    54,109.78x = 1,352,883,126.28
  5. Step 5: Solve for x
    x = 1,352,883,126.28/54,109.78
  6. Step 6: Final answer
    x = 25,002.56

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1.5x scale

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.