Home / 75,850-113,775-20,446

Finding the Fourth Proportional to 75,850, 113,775 and 20,446

Calculator

Solution

The fourth proportional to 75,850, 113,775 and 20,446 is: 30,669

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,850 : 113,775 = 20,446 : x
  2. Step 2: Convert to fraction form
    75,850/113,775 = 20,446/x
  3. Step 3: Cross multiply
    75,850x = 113,775 × 20,446
  4. Step 4: Simplify right side
    75,850x = 2,326,243,650
  5. Step 5: Solve for x
    x = 2,326,243,650/75,850
  6. Step 6: Final answer
    x = 30,669

Related Problems

Find fourth proportional to 37,925, 56,887.50 and 10,223
Half scale
Find fourth proportional to 151,700, 227,550 and 40,892
Double scale
Find fourth proportional to 75,851, 113,776.50 and 20,447
Similar ratio
Find fourth proportional to 113,775, 170,662.50 and 30,669
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.