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Finding the Fourth Proportional to 87,568.88, 120,849.72 and 49,855.28

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Solution

The fourth proportional to 87,568.88, 120,849.72 and 49,855.28 is: 68,802.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,568.88 : 120,849.72 = 49,855.28 : x
  2. Step 2: Convert to fraction form
    87,568.88/120,849.72 = 49,855.28/x
  3. Step 3: Cross multiply
    87,568.88x = 120,849.72 × 49,855.28
  4. Step 4: Simplify right side
    87,568.88x = 6,024,996,628.52
  5. Step 5: Solve for x
    x = 6,024,996,628.52/87,568.88
  6. Step 6: Final answer
    x = 68,802.94

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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.