Home / 68,109.51-102,163.23-30,643.13

Finding the Fourth Proportional to 68,109.51, 102,163.23 and 30,643.13

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Solution

The fourth proportional to 68,109.51, 102,163.23 and 30,643.13 is: 45,964.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,109.51 : 102,163.23 = 30,643.13 : x
  2. Step 2: Convert to fraction form
    68,109.51/102,163.23 = 30,643.13/x
  3. Step 3: Cross multiply
    68,109.51x = 102,163.23 × 30,643.13
  4. Step 4: Simplify right side
    68,109.51x = 3,130,601,138.11
  5. Step 5: Solve for x
    x = 3,130,601,138.11/68,109.51
  6. Step 6: Final answer
    x = 45,964.23

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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.