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Finding the Fourth Proportional to 69,610.40, 104,415.60 and 20,362.40

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Solution

The fourth proportional to 69,610.40, 104,415.60 and 20,362.40 is: 30,543.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,610.40 : 104,415.60 = 20,362.40 : x
  2. Step 2: Convert to fraction form
    69,610.40/104,415.60 = 20,362.40/x
  3. Step 3: Cross multiply
    69,610.40x = 104,415.60 × 20,362.40
  4. Step 4: Simplify right side
    69,610.40x = 2,126,152,213.44
  5. Step 5: Solve for x
    x = 2,126,152,213.44/69,610.40
  6. Step 6: Final answer
    x = 30,543.60

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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.