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Finding the Fourth Proportional to 103,650.88, 155,477.19 and 28,776.86

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Solution

The fourth proportional to 103,650.88, 155,477.19 and 28,776.86 is: 43,165.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,650.88 : 155,477.19 = 28,776.86 : x
  2. Step 2: Convert to fraction form
    103,650.88/155,477.19 = 28,776.86/x
  3. Step 3: Cross multiply
    103,650.88x = 155,477.19 × 28,776.86
  4. Step 4: Simplify right side
    103,650.88x = 4,474,145,498.57
  5. Step 5: Solve for x
    x = 4,474,145,498.57/103,650.88
  6. Step 6: Final answer
    x = 43,165.53

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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.