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Finding the Fourth Proportional to 73,165.69, 109,673.21 and 28,774.45

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Solution

The fourth proportional to 73,165.69, 109,673.21 and 28,774.45 is: 43,132.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,165.69 : 109,673.21 = 28,774.45 : x
  2. Step 2: Convert to fraction form
    73,165.69/109,673.21 = 28,774.45/x
  3. Step 3: Cross multiply
    73,165.69x = 109,673.21 × 28,774.45
  4. Step 4: Simplify right side
    73,165.69x = 3,155,786,153.61
  5. Step 5: Solve for x
    x = 3,155,786,153.61/73,165.69
  6. Step 6: Final answer
    x = 43,132.05

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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.