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Finding the Fourth Proportional to 68,881.40, 95,031.90 and 45,021.84

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Solution

The fourth proportional to 68,881.40, 95,031.90 and 45,021.84 is: 62,114.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,881.40 : 95,031.90 = 45,021.84 : x
  2. Step 2: Convert to fraction form
    68,881.40/95,031.90 = 45,021.84/x
  3. Step 3: Cross multiply
    68,881.40x = 95,031.90 × 45,021.84
  4. Step 4: Simplify right side
    68,881.40x = 4,278,510,996.70
  5. Step 5: Solve for x
    x = 4,278,510,996.70/68,881.40
  6. Step 6: Final answer
    x = 62,114.17

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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.