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Finding the Fourth Proportional to 53,843.58, 80,765.82 and 18,783.18

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Solution

The fourth proportional to 53,843.58, 80,765.82 and 18,783.18 is: 28,174.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,843.58 : 80,765.82 = 18,783.18 : x
  2. Step 2: Convert to fraction form
    53,843.58/80,765.82 = 18,783.18/x
  3. Step 3: Cross multiply
    53,843.58x = 80,765.82 × 18,783.18
  4. Step 4: Simplify right side
    53,843.58x = 1,517,038,934.91
  5. Step 5: Solve for x
    x = 1,517,038,934.91/53,843.58
  6. Step 6: Final answer
    x = 28,174.93

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1.5x scale

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.