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Finding the Fourth Proportional to 103,735.52, 155,590.32 and 28,861.28

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Solution

The fourth proportional to 103,735.52, 155,590.32 and 28,861.28 is: 43,288.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,735.52 : 155,590.32 = 28,861.28 : x
  2. Step 2: Convert to fraction form
    103,735.52/155,590.32 = 28,861.28/x
  3. Step 3: Cross multiply
    103,735.52x = 155,590.32 × 28,861.28
  4. Step 4: Simplify right side
    103,735.52x = 4,490,535,790.81
  5. Step 5: Solve for x
    x = 4,490,535,790.81/103,735.52
  6. Step 6: Final answer
    x = 43,288.31

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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.