Home / 51,820.37-77,771.55-20,245.55

Finding the Fourth Proportional to 51,820.37, 77,771.55 and 20,245.55

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Solution

The fourth proportional to 51,820.37, 77,771.55 and 20,245.55 is: 30,384.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,820.37 : 77,771.55 = 20,245.55 : x
  2. Step 2: Convert to fraction form
    51,820.37/77,771.55 = 20,245.55/x
  3. Step 3: Cross multiply
    51,820.37x = 77,771.55 × 20,245.55
  4. Step 4: Simplify right side
    51,820.37x = 1,574,527,804.10
  5. Step 5: Solve for x
    x = 1,574,527,804.10/51,820.37
  6. Step 6: Final answer
    x = 30,384.34

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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.