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Finding the Fourth Proportional to 55,389.57, 83,084.35 and 43,881.09

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Solution

The fourth proportional to 55,389.57, 83,084.35 and 43,881.09 is: 65,821.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,389.57 : 83,084.35 = 43,881.09 : x
  2. Step 2: Convert to fraction form
    55,389.57/83,084.35 = 43,881.09/x
  3. Step 3: Cross multiply
    55,389.57x = 83,084.35 × 43,881.09
  4. Step 4: Simplify right side
    55,389.57x = 3,645,831,424.52
  5. Step 5: Solve for x
    x = 3,645,831,424.52/55,389.57
  6. Step 6: Final answer
    x = 65,821.63

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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.