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Finding the Fourth Proportional to 54,421.88, 81,632.81 and 19,361.63

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Solution

The fourth proportional to 54,421.88, 81,632.81 and 19,361.63 is: 29,042.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,421.88 : 81,632.81 = 19,361.63 : x
  2. Step 2: Convert to fraction form
    54,421.88/81,632.81 = 19,361.63/x
  3. Step 3: Cross multiply
    54,421.88x = 81,632.81 × 19,361.63
  4. Step 4: Simplify right side
    54,421.88x = 1,580,544,515.57
  5. Step 5: Solve for x
    x = 1,580,544,515.57/54,421.88
  6. Step 6: Final answer
    x = 29,042.45

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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.