Home / 51,811.40-77,700.58-20,213.79

Finding the Fourth Proportional to 51,811.40, 77,700.58 and 20,213.79

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Solution

The fourth proportional to 51,811.40, 77,700.58 and 20,213.79 is: 30,314.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,811.40 : 77,700.58 = 20,213.79 : x
  2. Step 2: Convert to fraction form
    51,811.40/77,700.58 = 20,213.79/x
  3. Step 3: Cross multiply
    51,811.40x = 77,700.58 × 20,213.79
  4. Step 4: Simplify right side
    51,811.40x = 1,570,622,978.79
  5. Step 5: Solve for x
    x = 1,570,622,978.79/51,811.40
  6. Step 6: Final answer
    x = 30,314.24

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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.