Home / 78,431.25-117,698.73-36,881.49

Finding the Fourth Proportional to 78,431.25, 117,698.73 and 36,881.49

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Solution

The fourth proportional to 78,431.25, 117,698.73 and 36,881.49 is: 55,346.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,431.25 : 117,698.73 = 36,881.49 : x
  2. Step 2: Convert to fraction form
    78,431.25/117,698.73 = 36,881.49/x
  3. Step 3: Cross multiply
    78,431.25x = 117,698.73 × 36,881.49
  4. Step 4: Simplify right side
    78,431.25x = 4,340,904,533.51
  5. Step 5: Solve for x
    x = 4,340,904,533.51/78,431.25
  6. Step 6: Final answer
    x = 55,346.62

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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.