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Finding the Fourth Proportional to 39,122.91, 53,988.78 and 22,124.91

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Solution

The fourth proportional to 39,122.91, 53,988.78 and 22,124.91 is: 30,531.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,122.91 : 53,988.78 = 22,124.91 : x
  2. Step 2: Convert to fraction form
    39,122.91/53,988.78 = 22,124.91/x
  3. Step 3: Cross multiply
    39,122.91x = 53,988.78 × 22,124.91
  4. Step 4: Simplify right side
    39,122.91x = 1,194,497,183.94
  5. Step 5: Solve for x
    x = 1,194,497,183.94/39,122.91
  6. Step 6: Final answer
    x = 30,531.91

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1.5x scale

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.