Home / 39,840-85,816.50

Finding the Third Proportional to 39,840 and 85,816.50

Calculator

Solution

The third proportional to 39,840 and 85,816.50 is: 184,851.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,840 : 85,816.50 = 85,816.50 : x
  2. Step 2: Convert to fraction form
    39,840/85,816.50 = 85,816.50/x
  3. Step 3: Cross multiply
    39,840x = 85,816.50 × 85,816.50
  4. Step 4: Simplify right side
    39,840x = 7,364,471,672.25
  5. Step 5: Solve for x
    x = 7,364,471,672.25/39,840
  6. Step 6: Final answer
    x = 184,851.20

Related Problems

Find third proportional to 19,920 and 42,908.25
Half scale
Find third proportional to 79,680 and 171,633
Double scale
Find third proportional to 39,842 and 85,821
Similar ratio
Find third proportional to 59,760 and 128,724.75
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.