Home / 81,623.40-122,435.10-55,051.35

Finding the Fourth Proportional to 81,623.40, 122,435.10 and 55,051.35

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Solution

The fourth proportional to 81,623.40, 122,435.10 and 55,051.35 is: 82,577.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,623.40 : 122,435.10 = 55,051.35 : x
  2. Step 2: Convert to fraction form
    81,623.40/122,435.10 = 55,051.35/x
  3. Step 3: Cross multiply
    81,623.40x = 122,435.10 × 55,051.35
  4. Step 4: Simplify right side
    81,623.40x = 6,740,217,542.39
  5. Step 5: Solve for x
    x = 6,740,217,542.39/81,623.40
  6. Step 6: Final answer
    x = 82,577.03

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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.