Home / 85,750.50-128,634.66-23,421

Finding the Fourth Proportional to 85,750.50, 128,634.66 and 23,421

Calculator

Solution

The fourth proportional to 85,750.50, 128,634.66 and 23,421 is: 35,133.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,750.50 : 128,634.66 = 23,421 : x
  2. Step 2: Convert to fraction form
    85,750.50/128,634.66 = 23,421/x
  3. Step 3: Cross multiply
    85,750.50x = 128,634.66 × 23,421
  4. Step 4: Simplify right side
    85,750.50x = 3,012,752,371.86
  5. Step 5: Solve for x
    x = 3,012,752,371.86/85,750.50
  6. Step 6: Final answer
    x = 35,133.93

Related Problems

Find fourth proportional to 42,875.25, 64,317.33 and 11,710.50
Half scale
Find fourth proportional to 171,501, 257,269.32 and 46,842
Double scale
Find fourth proportional to 85,751.50, 128,636.16 and 23,422
Similar ratio
Find fourth proportional to 128,625.75, 192,951.99 and 35,131.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.