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Finding the Fourth Proportional to 75,278.49, 112,920.12 and 27,905.46

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Solution

The fourth proportional to 75,278.49, 112,920.12 and 27,905.46 is: 41,859.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,278.49 : 112,920.12 = 27,905.46 : x
  2. Step 2: Convert to fraction form
    75,278.49/112,920.12 = 27,905.46/x
  3. Step 3: Cross multiply
    75,278.49x = 112,920.12 × 27,905.46
  4. Step 4: Simplify right side
    75,278.49x = 3,151,087,891.86
  5. Step 5: Solve for x
    x = 3,151,087,891.86/75,278.49
  6. Step 6: Final answer
    x = 41,859.07

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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.