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Finding the Fourth Proportional to 55,355.56, 82,962.06 and 20,253.40

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Solution

The fourth proportional to 55,355.56, 82,962.06 and 20,253.40 is: 30,354.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,355.56 : 82,962.06 = 20,253.40 : x
  2. Step 2: Convert to fraction form
    55,355.56/82,962.06 = 20,253.40/x
  3. Step 3: Cross multiply
    55,355.56x = 82,962.06 × 20,253.40
  4. Step 4: Simplify right side
    55,355.56x = 1,680,263,786.00
  5. Step 5: Solve for x
    x = 1,680,263,786.00/55,355.56
  6. Step 6: Final answer
    x = 30,354.02

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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.