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Finding the Fourth Proportional to 69,879.61, 104,818.15 and 17,289.08

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Solution

The fourth proportional to 69,879.61, 104,818.15 and 17,289.08 is: 25,933.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,879.61 : 104,818.15 = 17,289.08 : x
  2. Step 2: Convert to fraction form
    69,879.61/104,818.15 = 17,289.08/x
  3. Step 3: Cross multiply
    69,879.61x = 104,818.15 × 17,289.08
  4. Step 4: Simplify right side
    69,879.61x = 1,812,209,271.39
  5. Step 5: Solve for x
    x = 1,812,209,271.39/69,879.61
  6. Step 6: Final answer
    x = 25,933.30

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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.