Home / 78,384,987.57-108,171,703.44-43,105,067.65

Finding the Fourth Proportional to 78,384,987.57, 108,171,703.44 and 43,105,067.65

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Solution

The fourth proportional to 78,384,987.57, 108,171,703.44 and 43,105,067.65 is: 59,485,224.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,384,987.57 : 108,171,703.44 = 43,105,067.65 : x
  2. Step 2: Convert to fraction form
    78,384,987.57/108,171,703.44 = 43,105,067.65/x
  3. Step 3: Cross multiply
    78,384,987.57x = 108,171,703.44 × 43,105,067.65
  4. Step 4: Simplify right side
    78,384,987.57x = 4,662,748,594,427,973
  5. Step 5: Solve for x
    x = 4,662,748,594,427,973/78,384,987.57
  6. Step 6: Final answer
    x = 59,485,224.65

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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.