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Finding the Fourth Proportional to 55,427.40, 83,181.18 and 21,698.40

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Solution

The fourth proportional to 55,427.40, 83,181.18 and 21,698.40 is: 32,563.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,427.40 : 83,181.18 = 21,698.40 : x
  2. Step 2: Convert to fraction form
    55,427.40/83,181.18 = 21,698.40/x
  3. Step 3: Cross multiply
    55,427.40x = 83,181.18 × 21,698.40
  4. Step 4: Simplify right side
    55,427.40x = 1,804,898,516.11
  5. Step 5: Solve for x
    x = 1,804,898,516.11/55,427.40
  6. Step 6: Final answer
    x = 32,563.29

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.