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Finding the Fourth Proportional to 83,645.37, 115,333.29 and 56,805.21

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Solution

The fourth proportional to 83,645.37, 115,333.29 and 56,805.21 is: 78,325.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,645.37 : 115,333.29 = 56,805.21 : x
  2. Step 2: Convert to fraction form
    83,645.37/115,333.29 = 56,805.21/x
  3. Step 3: Cross multiply
    83,645.37x = 115,333.29 × 56,805.21
  4. Step 4: Simplify right side
    83,645.37x = 6,551,531,758.44
  5. Step 5: Solve for x
    x = 6,551,531,758.44/83,645.37
  6. Step 6: Final answer
    x = 78,325.10

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.