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Finding the Fourth Proportional to 84,407.76, 126,611.64 and 22,077.72

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Solution

The fourth proportional to 84,407.76, 126,611.64 and 22,077.72 is: 33,116.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,407.76 : 126,611.64 = 22,077.72 : x
  2. Step 2: Convert to fraction form
    84,407.76/126,611.64 = 22,077.72/x
  3. Step 3: Cross multiply
    84,407.76x = 126,611.64 × 22,077.72
  4. Step 4: Simplify right side
    84,407.76x = 2,795,296,336.66
  5. Step 5: Solve for x
    x = 2,795,296,336.66/84,407.76
  6. Step 6: Final answer
    x = 33,116.58

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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.