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Finding the Fourth Proportional to 53,911.20, 80,866.80 and 49,072.80

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Solution

The fourth proportional to 53,911.20, 80,866.80 and 49,072.80 is: 73,609.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,911.20 : 80,866.80 = 49,072.80 : x
  2. Step 2: Convert to fraction form
    53,911.20/80,866.80 = 49,072.80/x
  3. Step 3: Cross multiply
    53,911.20x = 80,866.80 × 49,072.80
  4. Step 4: Simplify right side
    53,911.20x = 3,968,360,303.04
  5. Step 5: Solve for x
    x = 3,968,360,303.04/53,911.20
  6. Step 6: Final answer
    x = 73,609.20

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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.