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Finding the Fourth Proportional to 55,086.88, 76,020 and 29,936.32

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Solution

The fourth proportional to 55,086.88, 76,020 and 29,936.32 is: 41,312.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,086.88 : 76,020 = 29,936.32 : x
  2. Step 2: Convert to fraction form
    55,086.88/76,020 = 29,936.32/x
  3. Step 3: Cross multiply
    55,086.88x = 76,020 × 29,936.32
  4. Step 4: Simplify right side
    55,086.88x = 2,275,759,046.40
  5. Step 5: Solve for x
    x = 2,275,759,046.40/55,086.88
  6. Step 6: Final answer
    x = 41,312.18

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1.5x scale

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.