Home / 55,138.08-82,734.46-21,857.40

Finding the Fourth Proportional to 55,138.08, 82,734.46 and 21,857.40

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Solution

The fourth proportional to 55,138.08, 82,734.46 and 21,857.40 is: 32,796.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,138.08 : 82,734.46 = 21,857.40 : x
  2. Step 2: Convert to fraction form
    55,138.08/82,734.46 = 21,857.40/x
  3. Step 3: Cross multiply
    55,138.08x = 82,734.46 × 21,857.40
  4. Step 4: Simplify right side
    55,138.08x = 1,808,360,186.00
  5. Step 5: Solve for x
    x = 1,808,360,186.00/55,138.08
  6. Step 6: Final answer
    x = 32,796.94

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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.