Home / 51,982.20-77,973.30-20,839.80

Finding the Fourth Proportional to 51,982.20, 77,973.30 and 20,839.80

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Solution

The fourth proportional to 51,982.20, 77,973.30 and 20,839.80 is: 31,259.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,982.20 : 77,973.30 = 20,839.80 : x
  2. Step 2: Convert to fraction form
    51,982.20/77,973.30 = 20,839.80/x
  3. Step 3: Cross multiply
    51,982.20x = 77,973.30 × 20,839.80
  4. Step 4: Simplify right side
    51,982.20x = 1,624,947,977.34
  5. Step 5: Solve for x
    x = 1,624,947,977.34/51,982.20
  6. Step 6: Final answer
    x = 31,259.70

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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.