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Finding the Fourth Proportional to 53,850.65, 80,809.65 and 20,573.55

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Solution

The fourth proportional to 53,850.65, 80,809.65 and 20,573.55 is: 30,873.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,850.65 : 80,809.65 = 20,573.55 : x
  2. Step 2: Convert to fraction form
    53,850.65/80,809.65 = 20,573.55/x
  3. Step 3: Cross multiply
    53,850.65x = 80,809.65 × 20,573.55
  4. Step 4: Simplify right side
    53,850.65x = 1,662,541,374.76
  5. Step 5: Solve for x
    x = 1,662,541,374.76/53,850.65
  6. Step 6: Final answer
    x = 30,873.19

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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.