Home / 84,140.28-126,233.16-27,989.40

Finding the Fourth Proportional to 84,140.28, 126,233.16 and 27,989.40

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Solution

The fourth proportional to 84,140.28, 126,233.16 and 27,989.40 is: 41,991.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,140.28 : 126,233.16 = 27,989.40 : x
  2. Step 2: Convert to fraction form
    84,140.28/126,233.16 = 27,989.40/x
  3. Step 3: Cross multiply
    84,140.28x = 126,233.16 × 27,989.40
  4. Step 4: Simplify right side
    84,140.28x = 3,533,190,408.50
  5. Step 5: Solve for x
    x = 3,533,190,408.50/84,140.28
  6. Step 6: Final answer
    x = 41,991.66

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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.