Home / 53,986.60-80,979.90-49,148.20

Finding the Fourth Proportional to 53,986.60, 80,979.90 and 49,148.20

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Solution

The fourth proportional to 53,986.60, 80,979.90 and 49,148.20 is: 73,722.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,986.60 : 80,979.90 = 49,148.20 : x
  2. Step 2: Convert to fraction form
    53,986.60/80,979.90 = 49,148.20/x
  3. Step 3: Cross multiply
    53,986.60x = 80,979.90 × 49,148.20
  4. Step 4: Simplify right side
    53,986.60x = 3,980,016,321.18
  5. Step 5: Solve for x
    x = 3,980,016,321.18/53,986.60
  6. Step 6: Final answer
    x = 73,722.30

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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.