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Finding the Fourth Proportional to 69,809.38, 104,720.55 and 28,259.62

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Solution

The fourth proportional to 69,809.38, 104,720.55 and 28,259.62 is: 42,392.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,809.38 : 104,720.55 = 28,259.62 : x
  2. Step 2: Convert to fraction form
    69,809.38/104,720.55 = 28,259.62/x
  3. Step 3: Cross multiply
    69,809.38x = 104,720.55 × 28,259.62
  4. Step 4: Simplify right side
    69,809.38x = 2,959,362,949.19
  5. Step 5: Solve for x
    x = 2,959,362,949.19/69,809.38
  6. Step 6: Final answer
    x = 42,392.05

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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.