Home / 39,985.55-55,180.08-22,081.77

Finding the Fourth Proportional to 39,985.55, 55,180.08 and 22,081.77

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Solution

The fourth proportional to 39,985.55, 55,180.08 and 22,081.77 is: 30,472.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,985.55 : 55,180.08 = 22,081.77 : x
  2. Step 2: Convert to fraction form
    39,985.55/55,180.08 = 22,081.77/x
  3. Step 3: Cross multiply
    39,985.55x = 55,180.08 × 22,081.77
  4. Step 4: Simplify right side
    39,985.55x = 1,218,474,042.07
  5. Step 5: Solve for x
    x = 1,218,474,042.07/39,985.55
  6. Step 6: Final answer
    x = 30,472.86

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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.