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Finding the Fourth Proportional to 69,435.31, 104,152.97 and 19,520.46

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Solution

The fourth proportional to 69,435.31, 104,152.97 and 19,520.46 is: 29,280.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,435.31 : 104,152.97 = 19,520.46 : x
  2. Step 2: Convert to fraction form
    69,435.31/104,152.97 = 19,520.46/x
  3. Step 3: Cross multiply
    69,435.31x = 104,152.97 × 19,520.46
  4. Step 4: Simplify right side
    69,435.31x = 2,033,113,884.77
  5. Step 5: Solve for x
    x = 2,033,113,884.77/69,435.31
  6. Step 6: Final answer
    x = 29,280.69

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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.