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Finding the Fourth Proportional to 69,907.20, 104,866.86 and 19,306.25

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Solution

The fourth proportional to 69,907.20, 104,866.86 and 19,306.25 is: 28,961.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,907.20 : 104,866.86 = 19,306.25 : x
  2. Step 2: Convert to fraction form
    69,907.20/104,866.86 = 19,306.25/x
  3. Step 3: Cross multiply
    69,907.20x = 104,866.86 × 19,306.25
  4. Step 4: Simplify right side
    69,907.20x = 2,024,585,684.79
  5. Step 5: Solve for x
    x = 2,024,585,684.79/69,907.20
  6. Step 6: Final answer
    x = 28,961.05

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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.