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Finding the Fourth Proportional to 75,071.92, 103,595.82 and 43,245.40

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Solution

The fourth proportional to 75,071.92, 103,595.82 and 43,245.40 is: 59,676.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,071.92 : 103,595.82 = 43,245.40 : x
  2. Step 2: Convert to fraction form
    75,071.92/103,595.82 = 43,245.40/x
  3. Step 3: Cross multiply
    75,071.92x = 103,595.82 × 43,245.40
  4. Step 4: Simplify right side
    75,071.92x = 4,480,042,674.23
  5. Step 5: Solve for x
    x = 4,480,042,674.23/75,071.92
  6. Step 6: Final answer
    x = 59,676.68

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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.