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Finding the Fourth Proportional to 104,662.80, 157,030.65 and 45,540.90

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Solution

The fourth proportional to 104,662.80, 157,030.65 and 45,540.90 is: 68,327.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,662.80 : 157,030.65 = 45,540.90 : x
  2. Step 2: Convert to fraction form
    104,662.80/157,030.65 = 45,540.90/x
  3. Step 3: Cross multiply
    104,662.80x = 157,030.65 × 45,540.90
  4. Step 4: Simplify right side
    104,662.80x = 7,151,317,128.59
  5. Step 5: Solve for x
    x = 7,151,317,128.59/104,662.80
  6. Step 6: Final answer
    x = 68,327.21

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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.