Home / 54,178.66-81,271.64-20,899

Finding the Fourth Proportional to 54,178.66, 81,271.64 and 20,899

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Solution

The fourth proportional to 54,178.66, 81,271.64 and 20,899 is: 31,349.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,178.66 : 81,271.64 = 20,899 : x
  2. Step 2: Convert to fraction form
    54,178.66/81,271.64 = 20,899/x
  3. Step 3: Cross multiply
    54,178.66x = 81,271.64 × 20,899
  4. Step 4: Simplify right side
    54,178.66x = 1,698,496,004.36
  5. Step 5: Solve for x
    x = 1,698,496,004.36/54,178.66
  6. Step 6: Final answer
    x = 31,349.91

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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.