Home / 54,205.05-81,287.34-18,656.31

Finding the Fourth Proportional to 54,205.05, 81,287.34 and 18,656.31

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Solution

The fourth proportional to 54,205.05, 81,287.34 and 18,656.31 is: 27,977.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,205.05 : 81,287.34 = 18,656.31 : x
  2. Step 2: Convert to fraction form
    54,205.05/81,287.34 = 18,656.31/x
  3. Step 3: Cross multiply
    54,205.05x = 81,287.34 × 18,656.31
  4. Step 4: Simplify right side
    54,205.05x = 1,516,521,814.12
  5. Step 5: Solve for x
    x = 1,516,521,814.12/54,205.05
  6. Step 6: Final answer
    x = 27,977.50

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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.