Home / 39,288-72,831

Finding the Third Proportional to 39,288 and 72,831

Calculator

Solution

The third proportional to 39,288 and 72,831 is: 135,012.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,288 : 72,831 = 72,831 : x
  2. Step 2: Convert to fraction form
    39,288/72,831 = 72,831/x
  3. Step 3: Cross multiply
    39,288x = 72,831 × 72,831
  4. Step 4: Simplify right side
    39,288x = 5,304,354,561
  5. Step 5: Solve for x
    x = 5,304,354,561/39,288
  6. Step 6: Final answer
    x = 135,012.08

Related Problems

Find third proportional to 19,644 and 36,415.50
Half scale
Find third proportional to 78,576 and 145,662
Double scale
Find third proportional to 39,290 and 72,835
Similar ratio
Find third proportional to 58,932 and 109,246.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.85) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.