Home / 70,190.19-105,358.19-40,665.69

Finding the Fourth Proportional to 70,190.19, 105,358.19 and 40,665.69

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Solution

The fourth proportional to 70,190.19, 105,358.19 and 40,665.69 is: 61,040.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,190.19 : 105,358.19 = 40,665.69 : x
  2. Step 2: Convert to fraction form
    70,190.19/105,358.19 = 40,665.69/x
  3. Step 3: Cross multiply
    70,190.19x = 105,358.19 × 40,665.69
  4. Step 4: Simplify right side
    70,190.19x = 4,284,463,290.17
  5. Step 5: Solve for x
    x = 4,284,463,290.17/70,190.19
  6. Step 6: Final answer
    x = 61,040.77

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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.