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Finding the Fourth Proportional to 69,808.47, 103,923.16 and 69,393.29

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Solution

The fourth proportional to 69,808.47, 103,923.16 and 69,393.29 is: 103,305.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,808.47 : 103,923.16 = 69,393.29 : x
  2. Step 2: Convert to fraction form
    69,808.47/103,923.16 = 69,393.29/x
  3. Step 3: Cross multiply
    69,808.47x = 103,923.16 × 69,393.29
  4. Step 4: Simplify right side
    69,808.47x = 7,211,569,632.63
  5. Step 5: Solve for x
    x = 7,211,569,632.63/69,808.47
  6. Step 6: Final answer
    x = 103,305.08

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.