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Finding the Fourth Proportional to 30,939.84, 46,408.14 and 8,750.34

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Solution

The fourth proportional to 30,939.84, 46,408.14 and 8,750.34 is: 13,125.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,939.84 : 46,408.14 = 8,750.34 : x
  2. Step 2: Convert to fraction form
    30,939.84/46,408.14 = 8,750.34/x
  3. Step 3: Cross multiply
    30,939.84x = 46,408.14 × 8,750.34
  4. Step 4: Simplify right side
    30,939.84x = 406,087,003.77
  5. Step 5: Solve for x
    x = 406,087,003.77/30,939.84
  6. Step 6: Final answer
    x = 13,125.05

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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.