Home / 70,629.48-105,929.74-20,696.12

Finding the Fourth Proportional to 70,629.48, 105,929.74 and 20,696.12

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Solution

The fourth proportional to 70,629.48, 105,929.74 and 20,696.12 is: 31,039.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,629.48 : 105,929.74 = 20,696.12 : x
  2. Step 2: Convert to fraction form
    70,629.48/105,929.74 = 20,696.12/x
  3. Step 3: Cross multiply
    70,629.48x = 105,929.74 × 20,696.12
  4. Step 4: Simplify right side
    70,629.48x = 2,192,334,504.07
  5. Step 5: Solve for x
    x = 2,192,334,504.07/70,629.48
  6. Step 6: Final answer
    x = 31,039.94

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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.