Home / 54,205.55-81,288.09-18,656.81

Finding the Fourth Proportional to 54,205.55, 81,288.09 and 18,656.81

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Solution

The fourth proportional to 54,205.55, 81,288.09 and 18,656.81 is: 27,978.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,205.55 : 81,288.09 = 18,656.81 : x
  2. Step 2: Convert to fraction form
    54,205.55/81,288.09 = 18,656.81/x
  3. Step 3: Cross multiply
    54,205.55x = 81,288.09 × 18,656.81
  4. Step 4: Simplify right side
    54,205.55x = 1,516,576,043.95
  5. Step 5: Solve for x
    x = 1,516,576,043.95/54,205.55
  6. Step 6: Final answer
    x = 27,978.25

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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.