Home / 54,179.16-81,272.39-20,899.50

Finding the Fourth Proportional to 54,179.16, 81,272.39 and 20,899.50

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Solution

The fourth proportional to 54,179.16, 81,272.39 and 20,899.50 is: 31,350.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,179.16 : 81,272.39 = 20,899.50 : x
  2. Step 2: Convert to fraction form
    54,179.16/81,272.39 = 20,899.50/x
  3. Step 3: Cross multiply
    54,179.16x = 81,272.39 × 20,899.50
  4. Step 4: Simplify right side
    54,179.16x = 1,698,552,314.81
  5. Step 5: Solve for x
    x = 1,698,552,314.81/54,179.16
  6. Step 6: Final answer
    x = 31,350.66

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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.