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Finding the Fourth Proportional to 103,653.62, 155,483.67 and 28,774.52

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Solution

The fourth proportional to 103,653.62, 155,483.67 and 28,774.52 is: 43,162.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,653.62 : 155,483.67 = 28,774.52 : x
  2. Step 2: Convert to fraction form
    103,653.62/155,483.67 = 28,774.52/x
  3. Step 3: Cross multiply
    103,653.62x = 155,483.67 × 28,774.52
  4. Step 4: Simplify right side
    103,653.62x = 4,473,967,972.09
  5. Step 5: Solve for x
    x = 4,473,967,972.09/103,653.62
  6. Step 6: Final answer
    x = 43,162.68

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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.