Home / 54,021.12-81,044.64-20,741.46

Finding the Fourth Proportional to 54,021.12, 81,044.64 and 20,741.46

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Solution

The fourth proportional to 54,021.12, 81,044.64 and 20,741.46 is: 31,117.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,021.12 : 81,044.64 = 20,741.46 : x
  2. Step 2: Convert to fraction form
    54,021.12/81,044.64 = 20,741.46/x
  3. Step 3: Cross multiply
    54,021.12x = 81,044.64 × 20,741.46
  4. Step 4: Simplify right side
    54,021.12x = 1,680,984,158.77
  5. Step 5: Solve for x
    x = 1,680,984,158.77/54,021.12
  6. Step 6: Final answer
    x = 31,117.17

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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.