Home / 38,700-79,040

Finding the Third Proportional to 38,700 and 79,040

Calculator

Solution

The third proportional to 38,700 and 79,040 is: 161,429.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,700 : 79,040 = 79,040 : x
  2. Step 2: Convert to fraction form
    38,700/79,040 = 79,040/x
  3. Step 3: Cross multiply
    38,700x = 79,040 × 79,040
  4. Step 4: Simplify right side
    38,700x = 6,247,321,600
  5. Step 5: Solve for x
    x = 6,247,321,600/38,700
  6. Step 6: Final answer
    x = 161,429.50

Related Problems

Find third proportional to 19,350 and 39,520
Half scale
Find third proportional to 77,400 and 158,080
Double scale
Find third proportional to 38,702 and 79,044
Similar ratio
Find third proportional to 58,050 and 118,560
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.