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Finding the Fourth Proportional to 69,809.98, 103,925.40 and 69,394.79

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Solution

The fourth proportional to 69,809.98, 103,925.40 and 69,394.79 is: 103,307.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,809.98 : 103,925.40 = 69,394.79 : x
  2. Step 2: Convert to fraction form
    69,809.98/103,925.40 = 69,394.79/x
  3. Step 3: Cross multiply
    69,809.98x = 103,925.40 × 69,394.79
  4. Step 4: Simplify right side
    69,809.98x = 7,211,880,961.69
  5. Step 5: Solve for x
    x = 7,211,880,961.69/69,809.98
  6. Step 6: Final answer
    x = 103,307.31

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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.