Home / 57,362.40-86,017.68-20,427.36

Finding the Fourth Proportional to 57,362.40, 86,017.68 and 20,427.36

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Solution

The fourth proportional to 57,362.40, 86,017.68 and 20,427.36 is: 30,631.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,362.40 : 86,017.68 = 20,427.36 : x
  2. Step 2: Convert to fraction form
    57,362.40/86,017.68 = 20,427.36/x
  3. Step 3: Cross multiply
    57,362.40x = 86,017.68 × 20,427.36
  4. Step 4: Simplify right side
    57,362.40x = 1,757,114,115.72
  5. Step 5: Solve for x
    x = 1,757,114,115.72/57,362.40
  6. Step 6: Final answer
    x = 30,631.81

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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.