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Finding the Fourth Proportional to 69,775.40, 104,630.70 and 30,312.20

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Solution

The fourth proportional to 69,775.40, 104,630.70 and 30,312.20 is: 45,454.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,775.40 : 104,630.70 = 30,312.20 : x
  2. Step 2: Convert to fraction form
    69,775.40/104,630.70 = 30,312.20/x
  3. Step 3: Cross multiply
    69,775.40x = 104,630.70 × 30,312.20
  4. Step 4: Simplify right side
    69,775.40x = 3,171,586,704.54
  5. Step 5: Solve for x
    x = 3,171,586,704.54/69,775.40
  6. Step 6: Final answer
    x = 45,454.22

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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.