Home / 54,457.01-81,690.56-21,179.58

Finding the Fourth Proportional to 54,457.01, 81,690.56 and 21,179.58

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Solution

The fourth proportional to 54,457.01, 81,690.56 and 21,179.58 is: 31,771.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,457.01 : 81,690.56 = 21,179.58 : x
  2. Step 2: Convert to fraction form
    54,457.01/81,690.56 = 21,179.58/x
  3. Step 3: Cross multiply
    54,457.01x = 81,690.56 × 21,179.58
  4. Step 4: Simplify right side
    54,457.01x = 1,730,171,417.95
  5. Step 5: Solve for x
    x = 1,730,171,417.95/54,457.01
  6. Step 6: Final answer
    x = 31,771.33

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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.