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Finding the Fourth Proportional to 104,661.80, 157,029.15 and 45,539.90

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Solution

The fourth proportional to 104,661.80, 157,029.15 and 45,539.90 is: 68,325.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,661.80 : 157,029.15 = 45,539.90 : x
  2. Step 2: Convert to fraction form
    104,661.80/157,029.15 = 45,539.90/x
  3. Step 3: Cross multiply
    104,661.80x = 157,029.15 × 45,539.90
  4. Step 4: Simplify right side
    104,661.80x = 7,151,091,788.09
  5. Step 5: Solve for x
    x = 7,151,091,788.09/104,661.80
  6. Step 6: Final answer
    x = 68,325.71

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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.