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Finding the Fourth Proportional to 69,368.83, 95,729.31 and 39,155.42

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Solution

The fourth proportional to 69,368.83, 95,729.31 and 39,155.42 is: 54,034.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,368.83 : 95,729.31 = 39,155.42 : x
  2. Step 2: Convert to fraction form
    69,368.83/95,729.31 = 39,155.42/x
  3. Step 3: Cross multiply
    69,368.83x = 95,729.31 × 39,155.42
  4. Step 4: Simplify right side
    69,368.83x = 3,748,321,578.68
  5. Step 5: Solve for x
    x = 3,748,321,578.68/69,368.83
  6. Step 6: Final answer
    x = 54,034.67

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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.