Home / 57,440-85,815

Finding the Third Proportional to 57,440 and 85,815

Calculator

Solution

The third proportional to 57,440 and 85,815 is: 128,207.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,440 : 85,815 = 85,815 : x
  2. Step 2: Convert to fraction form
    57,440/85,815 = 85,815/x
  3. Step 3: Cross multiply
    57,440x = 85,815 × 85,815
  4. Step 4: Simplify right side
    57,440x = 7,364,214,225
  5. Step 5: Solve for x
    x = 7,364,214,225/57,440
  6. Step 6: Final answer
    x = 128,207.07

Related Problems

Find third proportional to 28,720 and 42,907.50
Half scale
Find third proportional to 114,880 and 171,630
Double scale
Find third proportional to 57,442 and 85,818
Similar ratio
Find third proportional to 86,160 and 128,722.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.