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Finding the Fourth Proportional to 69,009.93, 103,509.12 and 19,090.65

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Solution

The fourth proportional to 69,009.93, 103,509.12 and 19,090.65 is: 28,634.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,009.93 : 103,509.12 = 19,090.65 : x
  2. Step 2: Convert to fraction form
    69,009.93/103,509.12 = 19,090.65/x
  3. Step 3: Cross multiply
    69,009.93x = 103,509.12 × 19,090.65
  4. Step 4: Simplify right side
    69,009.93x = 1,976,056,381.73
  5. Step 5: Solve for x
    x = 1,976,056,381.73/69,009.93
  6. Step 6: Final answer
    x = 28,634.38

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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.