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Finding the Fourth Proportional to 75,373.80, 112,912.89 and 43,717.35

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Solution

The fourth proportional to 75,373.80, 112,912.89 and 43,717.35 is: 65,490.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,373.80 : 112,912.89 = 43,717.35 : x
  2. Step 2: Convert to fraction form
    75,373.80/112,912.89 = 43,717.35/x
  3. Step 3: Cross multiply
    75,373.80x = 112,912.89 × 43,717.35
  4. Step 4: Simplify right side
    75,373.80x = 4,936,252,331.64
  5. Step 5: Solve for x
    x = 4,936,252,331.64/75,373.80
  6. Step 6: Final answer
    x = 65,490.29

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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.