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Finding the Fourth Proportional to 103,583.70, 155,379.18 and 28,697.82

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Solution

The fourth proportional to 103,583.70, 155,379.18 and 28,697.82 is: 43,047.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,583.70 : 155,379.18 = 28,697.82 : x
  2. Step 2: Convert to fraction form
    103,583.70/155,379.18 = 28,697.82/x
  3. Step 3: Cross multiply
    103,583.70x = 155,379.18 × 28,697.82
  4. Step 4: Simplify right side
    103,583.70x = 4,459,043,739.39
  5. Step 5: Solve for x
    x = 4,459,043,739.39/103,583.70
  6. Step 6: Final answer
    x = 43,047.74

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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.