Home / 54,321.12-81,457.92-32,140.80

Finding the Fourth Proportional to 54,321.12, 81,457.92 and 32,140.80

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Solution

The fourth proportional to 54,321.12, 81,457.92 and 32,140.80 is: 48,197.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,321.12 : 81,457.92 = 32,140.80 : x
  2. Step 2: Convert to fraction form
    54,321.12/81,457.92 = 32,140.80/x
  3. Step 3: Cross multiply
    54,321.12x = 81,457.92 × 32,140.80
  4. Step 4: Simplify right side
    54,321.12x = 2,618,122,715.14
  5. Step 5: Solve for x
    x = 2,618,122,715.14/54,321.12
  6. Step 6: Final answer
    x = 48,197.14

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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.