Home / 76,280.42-105,229.58-66,194.70

Finding the Fourth Proportional to 76,280.42, 105,229.58 and 66,194.70

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Solution

The fourth proportional to 76,280.42, 105,229.58 and 66,194.70 is: 91,316.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,280.42 : 105,229.58 = 66,194.70 : x
  2. Step 2: Convert to fraction form
    76,280.42/105,229.58 = 66,194.70/x
  3. Step 3: Cross multiply
    76,280.42x = 105,229.58 × 66,194.70
  4. Step 4: Simplify right side
    76,280.42x = 6,965,640,148.25
  5. Step 5: Solve for x
    x = 6,965,640,148.25/76,280.42
  6. Step 6: Final answer
    x = 91,316.23

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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.