Home / 54,654-78,989

Finding the Third Proportional to 54,654 and 78,989

Calculator

Solution

The third proportional to 54,654 and 78,989 is: 114,159.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,654 : 78,989 = 78,989 : x
  2. Step 2: Convert to fraction form
    54,654/78,989 = 78,989/x
  3. Step 3: Cross multiply
    54,654x = 78,989 × 78,989
  4. Step 4: Simplify right side
    54,654x = 6,239,262,121
  5. Step 5: Solve for x
    x = 6,239,262,121/54,654
  6. Step 6: Final answer
    x = 114,159.30

Related Problems

Find third proportional to 27,327 and 39,494.50
Half scale
Find third proportional to 109,308 and 157,978
Double scale
Find third proportional to 54,656 and 78,992
Similar ratio
Find third proportional to 81,981 and 118,483.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.