Home / 39,781-85,788

Finding the Third Proportional to 39,781 and 85,788

Calculator

Solution

The third proportional to 39,781 and 85,788 is: 185,002.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,781 : 85,788 = 85,788 : x
  2. Step 2: Convert to fraction form
    39,781/85,788 = 85,788/x
  3. Step 3: Cross multiply
    39,781x = 85,788 × 85,788
  4. Step 4: Simplify right side
    39,781x = 7,359,580,944
  5. Step 5: Solve for x
    x = 7,359,580,944/39,781
  6. Step 6: Final answer
    x = 185,002.41

Related Problems

Find third proportional to 19,890.50 and 42,894
Half scale
Find third proportional to 79,562 and 171,576
Double scale
Find third proportional to 39,783 and 85,792
Similar ratio
Find third proportional to 59,671.50 and 128,682
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.