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Finding the Fourth Proportional to 70,166.97, 105,179.52 and 30,212.01

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Solution

The fourth proportional to 70,166.97, 105,179.52 and 30,212.01 is: 45,287.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,166.97 : 105,179.52 = 30,212.01 : x
  2. Step 2: Convert to fraction form
    70,166.97/105,179.52 = 30,212.01/x
  3. Step 3: Cross multiply
    70,166.97x = 105,179.52 × 30,212.01
  4. Step 4: Simplify right side
    70,166.97x = 3,177,684,710.04
  5. Step 5: Solve for x
    x = 3,177,684,710.04/70,166.97
  6. Step 6: Final answer
    x = 45,287.47

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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.