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Finding the Fourth Proportional to 90,361.51, 124,657.99 and 54,540.07

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Solution

The fourth proportional to 90,361.51, 124,657.99 and 54,540.07 is: 75,240.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,361.51 : 124,657.99 = 54,540.07 : x
  2. Step 2: Convert to fraction form
    90,361.51/124,657.99 = 54,540.07/x
  3. Step 3: Cross multiply
    90,361.51x = 124,657.99 × 54,540.07
  4. Step 4: Simplify right side
    90,361.51x = 6,798,855,500.66
  5. Step 5: Solve for x
    x = 6,798,855,500.66/90,361.51
  6. Step 6: Final answer
    x = 75,240.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.