Home / 54,499.15-81,779.78-21,214.90

Finding the Fourth Proportional to 54,499.15, 81,779.78 and 21,214.90

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Solution

The fourth proportional to 54,499.15, 81,779.78 and 21,214.90 is: 31,834.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,499.15 : 81,779.78 = 21,214.90 : x
  2. Step 2: Convert to fraction form
    54,499.15/81,779.78 = 21,214.90/x
  3. Step 3: Cross multiply
    54,499.15x = 81,779.78 × 21,214.90
  4. Step 4: Simplify right side
    54,499.15x = 1,734,949,854.72
  5. Step 5: Solve for x
    x = 1,734,949,854.72/54,499.15
  6. Step 6: Final answer
    x = 31,834.44

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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.