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Finding the Fourth Proportional to 72,094.03, 99,489.43 and 39,828.66

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Solution

The fourth proportional to 72,094.03, 99,489.43 and 39,828.66 is: 54,963.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,094.03 : 99,489.43 = 39,828.66 : x
  2. Step 2: Convert to fraction form
    72,094.03/99,489.43 = 39,828.66/x
  3. Step 3: Cross multiply
    72,094.03x = 99,489.43 × 39,828.66
  4. Step 4: Simplify right side
    72,094.03x = 3,962,530,581.49
  5. Step 5: Solve for x
    x = 3,962,530,581.49/72,094.03
  6. Step 6: Final answer
    x = 54,963.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.