Home / 78,832.95-118,179.09-28,901.38

Finding the Fourth Proportional to 78,832.95, 118,179.09 and 28,901.38

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Solution

The fourth proportional to 78,832.95, 118,179.09 and 28,901.38 is: 43,326.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,832.95 : 118,179.09 = 28,901.38 : x
  2. Step 2: Convert to fraction form
    78,832.95/118,179.09 = 28,901.38/x
  3. Step 3: Cross multiply
    78,832.95x = 118,179.09 × 28,901.38
  4. Step 4: Simplify right side
    78,832.95x = 3,415,538,788.14
  5. Step 5: Solve for x
    x = 3,415,538,788.14/78,832.95
  6. Step 6: Final answer
    x = 43,326.28

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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.