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Finding the Fourth Proportional to 103,620.77, 155,415.73 and 28,733.10

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Solution

The fourth proportional to 103,620.77, 155,415.73 and 28,733.10 is: 43,095.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,620.77 : 155,415.73 = 28,733.10 : x
  2. Step 2: Convert to fraction form
    103,620.77/155,415.73 = 28,733.10/x
  3. Step 3: Cross multiply
    103,620.77x = 155,415.73 × 28,733.10
  4. Step 4: Simplify right side
    103,620.77x = 4,465,575,711.66
  5. Step 5: Solve for x
    x = 4,465,575,711.66/103,620.77
  6. Step 6: Final answer
    x = 43,095.37

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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.