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Finding the Fourth Proportional to 83,893.58, 125,840.38 and 69,071.36

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Solution

The fourth proportional to 83,893.58, 125,840.38 and 69,071.36 is: 103,607.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,893.58 : 125,840.38 = 69,071.36 : x
  2. Step 2: Convert to fraction form
    83,893.58/125,840.38 = 69,071.36/x
  3. Step 3: Cross multiply
    83,893.58x = 125,840.38 × 69,071.36
  4. Step 4: Simplify right side
    83,893.58x = 8,691,966,189.52
  5. Step 5: Solve for x
    x = 8,691,966,189.52/83,893.58
  6. Step 6: Final answer
    x = 103,607.05

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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.