Home / 53,570.36-80,366.78-20,289.69

Finding the Fourth Proportional to 53,570.36, 80,366.78 and 20,289.69

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Solution

The fourth proportional to 53,570.36, 80,366.78 and 20,289.69 is: 30,438.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,570.36 : 80,366.78 = 20,289.69 : x
  2. Step 2: Convert to fraction form
    53,570.36/80,366.78 = 20,289.69/x
  3. Step 3: Cross multiply
    53,570.36x = 80,366.78 × 20,289.69
  4. Step 4: Simplify right side
    53,570.36x = 1,630,617,103.22
  5. Step 5: Solve for x
    x = 1,630,617,103.22/53,570.36
  6. Step 6: Final answer
    x = 30,438.79

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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.