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Finding the Fourth Proportional to 73,351.83, 109,953.90 and 28,961.40

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Solution

The fourth proportional to 73,351.83, 109,953.90 and 28,961.40 is: 43,412.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,351.83 : 109,953.90 = 28,961.40 : x
  2. Step 2: Convert to fraction form
    73,351.83/109,953.90 = 28,961.40/x
  3. Step 3: Cross multiply
    73,351.83x = 109,953.90 × 28,961.40
  4. Step 4: Simplify right side
    73,351.83x = 3,184,418,879.46
  5. Step 5: Solve for x
    x = 3,184,418,879.46/73,351.83
  6. Step 6: Final answer
    x = 43,412.94

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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.