Home / 39,775.22-54,890.35-21,870.98

Finding the Fourth Proportional to 39,775.22, 54,890.35 and 21,870.98

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Solution

The fourth proportional to 39,775.22, 54,890.35 and 21,870.98 is: 30,182.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,775.22 : 54,890.35 = 21,870.98 : x
  2. Step 2: Convert to fraction form
    39,775.22/54,890.35 = 21,870.98/x
  3. Step 3: Cross multiply
    39,775.22x = 54,890.35 × 21,870.98
  4. Step 4: Simplify right side
    39,775.22x = 1,200,505,747.04
  5. Step 5: Solve for x
    x = 1,200,505,747.04/39,775.22
  6. Step 6: Final answer
    x = 30,182.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.