Home / 68,640.36-94,725.50-38,425.55

Finding the Fourth Proportional to 68,640.36, 94,725.50 and 38,425.55

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Solution

The fourth proportional to 68,640.36, 94,725.50 and 38,425.55 is: 53,028.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,640.36 : 94,725.50 = 38,425.55 : x
  2. Step 2: Convert to fraction form
    68,640.36/94,725.50 = 38,425.55/x
  3. Step 3: Cross multiply
    68,640.36x = 94,725.50 × 38,425.55
  4. Step 4: Simplify right side
    68,640.36x = 3,639,878,770.77
  5. Step 5: Solve for x
    x = 3,639,878,770.77/68,640.36
  6. Step 6: Final answer
    x = 53,028.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.