Home / 70,067.38-105,089.76-20,136.08

Finding the Fourth Proportional to 70,067.38, 105,089.76 and 20,136.08

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Solution

The fourth proportional to 70,067.38, 105,089.76 and 20,136.08 is: 30,200.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,067.38 : 105,089.76 = 20,136.08 : x
  2. Step 2: Convert to fraction form
    70,067.38/105,089.76 = 20,136.08/x
  3. Step 3: Cross multiply
    70,067.38x = 105,089.76 × 20,136.08
  4. Step 4: Simplify right side
    70,067.38x = 2,116,095,289.09
  5. Step 5: Solve for x
    x = 2,116,095,289.09/70,067.38
  6. Step 6: Final answer
    x = 30,200.86

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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.