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Finding the Fourth Proportional to 69,394.05, 104,075.51 and 31,918.12

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Solution

The fourth proportional to 69,394.05, 104,075.51 and 31,918.12 is: 47,870.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,394.05 : 104,075.51 = 31,918.12 : x
  2. Step 2: Convert to fraction form
    69,394.05/104,075.51 = 31,918.12/x
  3. Step 3: Cross multiply
    69,394.05x = 104,075.51 × 31,918.12
  4. Step 4: Simplify right side
    69,394.05x = 3,321,894,537.45
  5. Step 5: Solve for x
    x = 3,321,894,537.45/69,394.05
  6. Step 6: Final answer
    x = 47,870.02

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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.