Home / 69,986.40-96,581.28-38,155.36

Finding the Fourth Proportional to 69,986.40, 96,581.28 and 38,155.36

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Solution

The fourth proportional to 69,986.40, 96,581.28 and 38,155.36 is: 52,654.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,986.40 : 96,581.28 = 38,155.36 : x
  2. Step 2: Convert to fraction form
    69,986.40/96,581.28 = 38,155.36/x
  3. Step 3: Cross multiply
    69,986.40x = 96,581.28 × 38,155.36
  4. Step 4: Simplify right side
    69,986.40x = 3,685,093,507.66
  5. Step 5: Solve for x
    x = 3,685,093,507.66/69,986.40
  6. Step 6: Final answer
    x = 52,654.42

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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.