Home / 66,880.27-100,335.39-20,136.79

Finding the Fourth Proportional to 66,880.27, 100,335.39 and 20,136.79

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Solution

The fourth proportional to 66,880.27, 100,335.39 and 20,136.79 is: 30,209.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,880.27 : 100,335.39 = 20,136.79 : x
  2. Step 2: Convert to fraction form
    66,880.27/100,335.39 = 20,136.79/x
  3. Step 3: Cross multiply
    66,880.27x = 100,335.39 × 20,136.79
  4. Step 4: Simplify right side
    66,880.27x = 2,020,432,678.00
  5. Step 5: Solve for x
    x = 2,020,432,678.00/66,880.27
  6. Step 6: Final answer
    x = 30,209.70

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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.