Home / 69,538.40-104,307.60-66,816.80

Finding the Fourth Proportional to 69,538.40, 104,307.60 and 66,816.80

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Solution

The fourth proportional to 69,538.40, 104,307.60 and 66,816.80 is: 100,225.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,538.40 : 104,307.60 = 66,816.80 : x
  2. Step 2: Convert to fraction form
    69,538.40/104,307.60 = 66,816.80/x
  3. Step 3: Cross multiply
    69,538.40x = 104,307.60 × 66,816.80
  4. Step 4: Simplify right side
    69,538.40x = 6,969,500,047.68
  5. Step 5: Solve for x
    x = 6,969,500,047.68/69,538.40
  6. Step 6: Final answer
    x = 100,225.20

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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.