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Finding the Fourth Proportional to 78,705.44, 118,053.84 and 43,536.32

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Solution

The fourth proportional to 78,705.44, 118,053.84 and 43,536.32 is: 65,302.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,705.44 : 118,053.84 = 43,536.32 : x
  2. Step 2: Convert to fraction form
    78,705.44/118,053.84 = 43,536.32/x
  3. Step 3: Cross multiply
    78,705.44x = 118,053.84 × 43,536.32
  4. Step 4: Simplify right side
    78,705.44x = 5,139,629,755.47
  5. Step 5: Solve for x
    x = 5,139,629,755.47/78,705.44
  6. Step 6: Final answer
    x = 65,302.09

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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.