Home / 81,135.48-111,958.80-46,679.28

Finding the Fourth Proportional to 81,135.48, 111,958.80 and 46,679.28

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Solution

The fourth proportional to 81,135.48, 111,958.80 and 46,679.28 is: 64,412.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,135.48 : 111,958.80 = 46,679.28 : x
  2. Step 2: Convert to fraction form
    81,135.48/111,958.80 = 46,679.28/x
  3. Step 3: Cross multiply
    81,135.48x = 111,958.80 × 46,679.28
  4. Step 4: Simplify right side
    81,135.48x = 5,226,156,173.66
  5. Step 5: Solve for x
    x = 5,226,156,173.66/81,135.48
  6. Step 6: Final answer
    x = 64,412.71

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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.