Home / 81,208.34-121,782.18-27,885.18

Finding the Fourth Proportional to 81,208.34, 121,782.18 and 27,885.18

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Solution

The fourth proportional to 81,208.34, 121,782.18 and 27,885.18 is: 41,817.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,208.34 : 121,782.18 = 27,885.18 : x
  2. Step 2: Convert to fraction form
    81,208.34/121,782.18 = 27,885.18/x
  3. Step 3: Cross multiply
    81,208.34x = 121,782.18 × 27,885.18
  4. Step 4: Simplify right side
    81,208.34x = 3,395,918,010.09
  5. Step 5: Solve for x
    x = 3,395,918,010.09/81,208.34
  6. Step 6: Final answer
    x = 41,817.36

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1.5x scale

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.