Home / 142,028.43-213,040.81-40,828.87

Finding the Fourth Proportional to 142,028.43, 213,040.81 and 40,828.87

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Solution

The fourth proportional to 142,028.43, 213,040.81 and 40,828.87 is: 61,242.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,028.43 : 213,040.81 = 40,828.87 : x
  2. Step 2: Convert to fraction form
    142,028.43/213,040.81 = 40,828.87/x
  3. Step 3: Cross multiply
    142,028.43x = 213,040.81 × 40,828.87
  4. Step 4: Simplify right side
    142,028.43x = 8,698,215,536.18
  5. Step 5: Solve for x
    x = 8,698,215,536.18/142,028.43
  6. Step 6: Final answer
    x = 61,242.78

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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.