Home / 69,128.19-95,370.81-40,438.71

Finding the Fourth Proportional to 69,128.19, 95,370.81 and 40,438.71

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Solution

The fourth proportional to 69,128.19, 95,370.81 and 40,438.71 is: 55,790.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,128.19 : 95,370.81 = 40,438.71 : x
  2. Step 2: Convert to fraction form
    69,128.19/95,370.81 = 40,438.71/x
  3. Step 3: Cross multiply
    69,128.19x = 95,370.81 × 40,438.71
  4. Step 4: Simplify right side
    69,128.19x = 3,856,672,528.06
  5. Step 5: Solve for x
    x = 3,856,672,528.06/69,128.19
  6. Step 6: Final answer
    x = 55,790.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.