Home / 39,985.91-55,180.53-22,080.86

Finding the Fourth Proportional to 39,985.91, 55,180.53 and 22,080.86

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Solution

The fourth proportional to 39,985.91, 55,180.53 and 22,080.86 is: 30,471.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,985.91 : 55,180.53 = 22,080.86 : x
  2. Step 2: Convert to fraction form
    39,985.91/55,180.53 = 22,080.86/x
  3. Step 3: Cross multiply
    39,985.91x = 55,180.53 × 22,080.86
  4. Step 4: Simplify right side
    39,985.91x = 1,218,433,281.75
  5. Step 5: Solve for x
    x = 1,218,433,281.75/39,985.91
  6. Step 6: Final answer
    x = 30,471.57

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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.