Home / 55,665.12-83,530.44-20,629.20

Finding the Fourth Proportional to 55,665.12, 83,530.44 and 20,629.20

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Solution

The fourth proportional to 55,665.12, 83,530.44 and 20,629.20 is: 30,955.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,665.12 : 83,530.44 = 20,629.20 : x
  2. Step 2: Convert to fraction form
    55,665.12/83,530.44 = 20,629.20/x
  3. Step 3: Cross multiply
    55,665.12x = 83,530.44 × 20,629.20
  4. Step 4: Simplify right side
    55,665.12x = 1,723,166,152.85
  5. Step 5: Solve for x
    x = 1,723,166,152.85/55,665.12
  6. Step 6: Final answer
    x = 30,955.94

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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.