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Finding the Fourth Proportional to 70,393.10, 105,603.42 and 30,950.09

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Solution

The fourth proportional to 70,393.10, 105,603.42 and 30,950.09 is: 46,431.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,393.10 : 105,603.42 = 30,950.09 : x
  2. Step 2: Convert to fraction form
    70,393.10/105,603.42 = 30,950.09/x
  3. Step 3: Cross multiply
    70,393.10x = 105,603.42 × 30,950.09
  4. Step 4: Simplify right side
    70,393.10x = 3,268,434,825.29
  5. Step 5: Solve for x
    x = 3,268,434,825.29/70,393.10
  6. Step 6: Final answer
    x = 46,431.19

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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.