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Finding the Fourth Proportional to 53,806.40, 80,709.60 and 53,460.80

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Solution

The fourth proportional to 53,806.40, 80,709.60 and 53,460.80 is: 80,191.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,806.40 : 80,709.60 = 53,460.80 : x
  2. Step 2: Convert to fraction form
    53,806.40/80,709.60 = 53,460.80/x
  3. Step 3: Cross multiply
    53,806.40x = 80,709.60 × 53,460.80
  4. Step 4: Simplify right side
    53,806.40x = 4,314,799,783.68
  5. Step 5: Solve for x
    x = 4,314,799,783.68/53,806.40
  6. Step 6: Final answer
    x = 80,191.20

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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.