Home / 53,880.40-80,820.60-20,601.55

Finding the Fourth Proportional to 53,880.40, 80,820.60 and 20,601.55

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Solution

The fourth proportional to 53,880.40, 80,820.60 and 20,601.55 is: 30,902.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,880.40 : 80,820.60 = 20,601.55 : x
  2. Step 2: Convert to fraction form
    53,880.40/80,820.60 = 20,601.55/x
  3. Step 3: Cross multiply
    53,880.40x = 80,820.60 × 20,601.55
  4. Step 4: Simplify right side
    53,880.40x = 1,665,029,631.93
  5. Step 5: Solve for x
    x = 1,665,029,631.93/53,880.40
  6. Step 6: Final answer
    x = 30,902.33

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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.