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Finding the Fourth Proportional to 103,433.73, 155,147.51 and 28,558.45

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Solution

The fourth proportional to 103,433.73, 155,147.51 and 28,558.45 is: 42,836.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,433.73 : 155,147.51 = 28,558.45 : x
  2. Step 2: Convert to fraction form
    103,433.73/155,147.51 = 28,558.45/x
  3. Step 3: Cross multiply
    103,433.73x = 155,147.51 × 28,558.45
  4. Step 4: Simplify right side
    103,433.73x = 4,430,772,406.96
  5. Step 5: Solve for x
    x = 4,430,772,406.96/103,433.73
  6. Step 6: Final answer
    x = 42,836.82

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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.