Home / 39,840.50-54,979.89-22,176.50

Finding the Fourth Proportional to 39,840.50, 54,979.89 and 22,176.50

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Solution

The fourth proportional to 39,840.50, 54,979.89 and 22,176.50 is: 30,603.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,840.50 : 54,979.89 = 22,176.50 : x
  2. Step 2: Convert to fraction form
    39,840.50/54,979.89 = 22,176.50/x
  3. Step 3: Cross multiply
    39,840.50x = 54,979.89 × 22,176.50
  4. Step 4: Simplify right side
    39,840.50x = 1,219,261,530.59
  5. Step 5: Solve for x
    x = 1,219,261,530.59/39,840.50
  6. Step 6: Final answer
    x = 30,603.57

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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.