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Finding the Fourth Proportional to 79,872.76, 110,260.61 and 50,813.07

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Solution

The fourth proportional to 79,872.76, 110,260.61 and 50,813.07 is: 70,145.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,872.76 : 110,260.61 = 50,813.07 : x
  2. Step 2: Convert to fraction form
    79,872.76/110,260.61 = 50,813.07/x
  3. Step 3: Cross multiply
    79,872.76x = 110,260.61 × 50,813.07
  4. Step 4: Simplify right side
    79,872.76x = 5,602,679,967.14
  5. Step 5: Solve for x
    x = 5,602,679,967.14/79,872.76
  6. Step 6: Final answer
    x = 70,145.07

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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.