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Finding the Fourth Proportional to 39,291.61, 54,220.81 and 22,295.49

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Solution

The fourth proportional to 39,291.61, 54,220.81 and 22,295.49 is: 30,766.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,291.61 : 54,220.81 = 22,295.49 : x
  2. Step 2: Convert to fraction form
    39,291.61/54,220.81 = 22,295.49/x
  3. Step 3: Cross multiply
    39,291.61x = 54,220.81 × 22,295.49
  4. Step 4: Simplify right side
    39,291.61x = 1,208,879,444.57
  5. Step 5: Solve for x
    x = 1,208,879,444.57/39,291.61
  6. Step 6: Final answer
    x = 30,766.86

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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.