Home / 54,089.64-81,131.76-19,029.60

Finding the Fourth Proportional to 54,089.64, 81,131.76 and 19,029.60

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Solution

The fourth proportional to 54,089.64, 81,131.76 and 19,029.60 is: 28,543.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,089.64 : 81,131.76 = 19,029.60 : x
  2. Step 2: Convert to fraction form
    54,089.64/81,131.76 = 19,029.60/x
  3. Step 3: Cross multiply
    54,089.64x = 81,131.76 × 19,029.60
  4. Step 4: Simplify right side
    54,089.64x = 1,543,904,940.10
  5. Step 5: Solve for x
    x = 1,543,904,940.10/54,089.64
  6. Step 6: Final answer
    x = 28,543.45

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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.