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Finding the Fourth Proportional to 28,069.79, 42,104.52 and 7,009.79

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Solution

The fourth proportional to 28,069.79, 42,104.52 and 7,009.79 is: 10,514.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,069.79 : 42,104.52 = 7,009.79 : x
  2. Step 2: Convert to fraction form
    28,069.79/42,104.52 = 7,009.79/x
  3. Step 3: Cross multiply
    28,069.79x = 42,104.52 × 7,009.79
  4. Step 4: Simplify right side
    28,069.79x = 295,143,843.25
  5. Step 5: Solve for x
    x = 295,143,843.25/28,069.79
  6. Step 6: Final answer
    x = 10,514.64

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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.