Home / 54,984.32-82,420.14-21,690.90

Finding the Fourth Proportional to 54,984.32, 82,420.14 and 21,690.90

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Solution

The fourth proportional to 54,984.32, 82,420.14 and 21,690.90 is: 32,514.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,984.32 : 82,420.14 = 21,690.90 : x
  2. Step 2: Convert to fraction form
    54,984.32/82,420.14 = 21,690.90/x
  3. Step 3: Cross multiply
    54,984.32x = 82,420.14 × 21,690.90
  4. Step 4: Simplify right side
    54,984.32x = 1,787,767,014.73
  5. Step 5: Solve for x
    x = 1,787,767,014.73/54,984.32
  6. Step 6: Final answer
    x = 32,514.12

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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.