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Finding the Fourth Proportional to 79,390.44, 109,551.96 and 43,580.34

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Solution

The fourth proportional to 79,390.44, 109,551.96 and 43,580.34 is: 60,137.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,390.44 : 109,551.96 = 43,580.34 : x
  2. Step 2: Convert to fraction form
    79,390.44/109,551.96 = 43,580.34/x
  3. Step 3: Cross multiply
    79,390.44x = 109,551.96 × 43,580.34
  4. Step 4: Simplify right side
    79,390.44x = 4,774,311,664.47
  5. Step 5: Solve for x
    x = 4,774,311,664.47/79,390.44
  6. Step 6: Final answer
    x = 60,137.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.