Home / 78,460-117,690-23,056

Finding the Fourth Proportional to 78,460, 117,690 and 23,056

Calculator

Solution

The fourth proportional to 78,460, 117,690 and 23,056 is: 34,584

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,460 : 117,690 = 23,056 : x
  2. Step 2: Convert to fraction form
    78,460/117,690 = 23,056/x
  3. Step 3: Cross multiply
    78,460x = 117,690 × 23,056
  4. Step 4: Simplify right side
    78,460x = 2,713,460,640
  5. Step 5: Solve for x
    x = 2,713,460,640/78,460
  6. Step 6: Final answer
    x = 34,584

Related Problems

Find fourth proportional to 39,230, 58,845 and 11,528
Half scale
Find fourth proportional to 156,920, 235,380 and 46,112
Double scale
Find fourth proportional to 78,461, 117,691.50 and 23,057
Similar ratio
Find fourth proportional to 117,690, 176,535 and 34,584
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.