Home / 75,815.36-104,616.80-43,978.08

Finding the Fourth Proportional to 75,815.36, 104,616.80 and 43,978.08

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Solution

The fourth proportional to 75,815.36, 104,616.80 and 43,978.08 is: 60,684.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,815.36 : 104,616.80 = 43,978.08 : x
  2. Step 2: Convert to fraction form
    75,815.36/104,616.80 = 43,978.08/x
  3. Step 3: Cross multiply
    75,815.36x = 104,616.80 × 43,978.08
  4. Step 4: Simplify right side
    75,815.36x = 4,600,845,999.74
  5. Step 5: Solve for x
    x = 4,600,845,999.74/75,815.36
  6. Step 6: Final answer
    x = 60,684.88

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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.