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Finding the Fourth Proportional to 69,642.66, 96,112.85 and 39,433.31

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Solution

The fourth proportional to 69,642.66, 96,112.85 and 39,433.31 is: 54,421.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,642.66 : 96,112.85 = 39,433.31 : x
  2. Step 2: Convert to fraction form
    69,642.66/96,112.85 = 39,433.31/x
  3. Step 3: Cross multiply
    69,642.66x = 96,112.85 × 39,433.31
  4. Step 4: Simplify right side
    69,642.66x = 3,790,047,131.30
  5. Step 5: Solve for x
    x = 3,790,047,131.30/69,642.66
  6. Step 6: Final answer
    x = 54,421.34

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1.5x scale

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.