Home / 78,446.38-117,622.09-31,644.58

Finding the Fourth Proportional to 78,446.38, 117,622.09 and 31,644.58

Calculator

Solution

The fourth proportional to 78,446.38, 117,622.09 and 31,644.58 is: 47,447.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,446.38 : 117,622.09 = 31,644.58 : x
  2. Step 2: Convert to fraction form
    78,446.38/117,622.09 = 31,644.58/x
  3. Step 3: Cross multiply
    78,446.38x = 117,622.09 × 31,644.58
  4. Step 4: Simplify right side
    78,446.38x = 3,722,101,636.77
  5. Step 5: Solve for x
    x = 3,722,101,636.77/78,446.38
  6. Step 6: Final answer
    x = 47,447.72

Related Problems

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.