Home / 81,716.43-122,463.93-42,301.23

Finding the Fourth Proportional to 81,716.43, 122,463.93 and 42,301.23

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Solution

The fourth proportional to 81,716.43, 122,463.93 and 42,301.23 is: 63,394.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,716.43 : 122,463.93 = 42,301.23 : x
  2. Step 2: Convert to fraction form
    81,716.43/122,463.93 = 42,301.23/x
  3. Step 3: Cross multiply
    81,716.43x = 122,463.93 × 42,301.23
  4. Step 4: Simplify right side
    81,716.43x = 5,180,374,869.63
  5. Step 5: Solve for x
    x = 5,180,374,869.63/81,716.43
  6. Step 6: Final answer
    x = 63,394.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.