Home / 84,742.60-126,768.30-76,448.20

Finding the Fourth Proportional to 84,742.60, 126,768.30 and 76,448.20

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Solution

The fourth proportional to 84,742.60, 126,768.30 and 76,448.20 is: 114,360.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,742.60 : 126,768.30 = 76,448.20 : x
  2. Step 2: Convert to fraction form
    84,742.60/126,768.30 = 76,448.20/x
  3. Step 3: Cross multiply
    84,742.60x = 126,768.30 × 76,448.20
  4. Step 4: Simplify right side
    84,742.60x = 9,691,208,352.06
  5. Step 5: Solve for x
    x = 9,691,208,352.06/84,742.60
  6. Step 6: Final answer
    x = 114,360.53

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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.