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Finding the Fourth Proportional to 45,458.80, 68,124.20 and 36,114.80

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Solution

The fourth proportional to 45,458.80, 68,124.20 and 36,114.80 is: 54,121.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,458.80 : 68,124.20 = 36,114.80 : x
  2. Step 2: Convert to fraction form
    45,458.80/68,124.20 = 36,114.80/x
  3. Step 3: Cross multiply
    45,458.80x = 68,124.20 × 36,114.80
  4. Step 4: Simplify right side
    45,458.80x = 2,460,291,858.16
  5. Step 5: Solve for x
    x = 2,460,291,858.16/45,458.80
  6. Step 6: Final answer
    x = 54,121.36

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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.