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Finding the Fourth Proportional to 70,115.58, 105,110.73 and 30,641.43

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Solution

The fourth proportional to 70,115.58, 105,110.73 and 30,641.43 is: 45,934.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,115.58 : 105,110.73 = 30,641.43 : x
  2. Step 2: Convert to fraction form
    70,115.58/105,110.73 = 30,641.43/x
  3. Step 3: Cross multiply
    70,115.58x = 105,110.73 × 30,641.43
  4. Step 4: Simplify right side
    70,115.58x = 3,220,743,075.54
  5. Step 5: Solve for x
    x = 3,220,743,075.54/70,115.58
  6. Step 6: Final answer
    x = 45,934.77

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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.