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Finding the Fourth Proportional to 69,809.48, 103,924.65 and 69,394.29

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Solution

The fourth proportional to 69,809.48, 103,924.65 and 69,394.29 is: 103,306.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,809.48 : 103,924.65 = 69,394.29 : x
  2. Step 2: Convert to fraction form
    69,809.48/103,924.65 = 69,394.29/x
  3. Step 3: Cross multiply
    69,809.48x = 103,924.65 × 69,394.29
  4. Step 4: Simplify right side
    69,809.48x = 7,211,777,300.25
  5. Step 5: Solve for x
    x = 7,211,777,300.25/69,809.48
  6. Step 6: Final answer
    x = 103,306.57

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1.5x scale

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.