Home / 55,712.48-83,515.44-20,642.72

Finding the Fourth Proportional to 55,712.48, 83,515.44 and 20,642.72

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Solution

The fourth proportional to 55,712.48, 83,515.44 and 20,642.72 is: 30,944.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,712.48 : 83,515.44 = 20,642.72 : x
  2. Step 2: Convert to fraction form
    55,712.48/83,515.44 = 20,642.72/x
  3. Step 3: Cross multiply
    55,712.48x = 83,515.44 × 20,642.72
  4. Step 4: Simplify right side
    55,712.48x = 1,723,985,843.60
  5. Step 5: Solve for x
    x = 1,723,985,843.60/55,712.48
  6. Step 6: Final answer
    x = 30,944.34

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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.