Home / 70,143.36-105,233.13-20,227.38

Finding the Fourth Proportional to 70,143.36, 105,233.13 and 20,227.38

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Solution

The fourth proportional to 70,143.36, 105,233.13 and 20,227.38 is: 30,346.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,143.36 : 105,233.13 = 20,227.38 : x
  2. Step 2: Convert to fraction form
    70,143.36/105,233.13 = 20,227.38/x
  3. Step 3: Cross multiply
    70,143.36x = 105,233.13 × 20,227.38
  4. Step 4: Simplify right side
    70,143.36x = 2,128,590,509.10
  5. Step 5: Solve for x
    x = 2,128,590,509.10/70,143.36
  6. Step 6: Final answer
    x = 30,346.29

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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.