Home / 78,688.45-118,067.53-41,239.58

Finding the Fourth Proportional to 78,688.45, 118,067.53 and 41,239.58

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Solution

The fourth proportional to 78,688.45, 118,067.53 and 41,239.58 is: 61,877.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,688.45 : 118,067.53 = 41,239.58 : x
  2. Step 2: Convert to fraction form
    78,688.45/118,067.53 = 41,239.58/x
  3. Step 3: Cross multiply
    78,688.45x = 118,067.53 × 41,239.58
  4. Step 4: Simplify right side
    78,688.45x = 4,869,055,052.28
  5. Step 5: Solve for x
    x = 4,869,055,052.28/78,688.45
  6. Step 6: Final answer
    x = 61,877.63

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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.