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Finding the Fourth Proportional to 75,124.67, 112,799.75 and 71,513.37

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Solution

The fourth proportional to 75,124.67, 112,799.75 and 71,513.37 is: 107,377.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,124.67 : 112,799.75 = 71,513.37 : x
  2. Step 2: Convert to fraction form
    75,124.67/112,799.75 = 71,513.37/x
  3. Step 3: Cross multiply
    75,124.67x = 112,799.75 × 71,513.37
  4. Step 4: Simplify right side
    75,124.67x = 8,066,689,900.09
  5. Step 5: Solve for x
    x = 8,066,689,900.09/75,124.67
  6. Step 6: Final answer
    x = 107,377.38

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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.