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Finding the Fourth Proportional to 55,138.84, 82,084.69 and 54,810.79

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Solution

The fourth proportional to 55,138.84, 82,084.69 and 54,810.79 is: 81,596.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,138.84 : 82,084.69 = 54,810.79 : x
  2. Step 2: Convert to fraction form
    55,138.84/82,084.69 = 54,810.79/x
  3. Step 3: Cross multiply
    55,138.84x = 82,084.69 × 54,810.79
  4. Step 4: Simplify right side
    55,138.84x = 4,499,126,569.11
  5. Step 5: Solve for x
    x = 4,499,126,569.11/55,138.84
  6. Step 6: Final answer
    x = 81,596.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.