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Finding the Fourth Proportional to 73,003.86, 109,458.70 and 28,635.09

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Solution

The fourth proportional to 73,003.86, 109,458.70 and 28,635.09 is: 42,934.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,003.86 : 109,458.70 = 28,635.09 : x
  2. Step 2: Convert to fraction form
    73,003.86/109,458.70 = 28,635.09/x
  3. Step 3: Cross multiply
    73,003.86x = 109,458.70 × 28,635.09
  4. Step 4: Simplify right side
    73,003.86x = 3,134,359,927.84
  5. Step 5: Solve for x
    x = 3,134,359,927.84/73,003.86
  6. Step 6: Final answer
    x = 42,934.17

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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.