Home / 53,738.64-80,640.36-18,702.90

Finding the Fourth Proportional to 53,738.64, 80,640.36 and 18,702.90

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Solution

The fourth proportional to 53,738.64, 80,640.36 and 18,702.90 is: 28,065.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,738.64 : 80,640.36 = 18,702.90 : x
  2. Step 2: Convert to fraction form
    53,738.64/80,640.36 = 18,702.90/x
  3. Step 3: Cross multiply
    53,738.64x = 80,640.36 × 18,702.90
  4. Step 4: Simplify right side
    53,738.64x = 1,508,208,589.04
  5. Step 5: Solve for x
    x = 1,508,208,589.04/53,738.64
  6. Step 6: Final answer
    x = 28,065.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.