Home / 78,638.04-117,913.32-26,018.82

Finding the Fourth Proportional to 78,638.04, 117,913.32 and 26,018.82

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Solution

The fourth proportional to 78,638.04, 117,913.32 and 26,018.82 is: 39,013.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,638.04 : 117,913.32 = 26,018.82 : x
  2. Step 2: Convert to fraction form
    78,638.04/117,913.32 = 26,018.82/x
  3. Step 3: Cross multiply
    78,638.04x = 117,913.32 × 26,018.82
  4. Step 4: Simplify right side
    78,638.04x = 3,067,965,448.68
  5. Step 5: Solve for x
    x = 3,067,965,448.68/78,638.04
  6. Step 6: Final answer
    x = 39,013.76

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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.