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Finding the Fourth Proportional to 51,888.99, 77,856.11 and 18,179.20

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Solution

The fourth proportional to 51,888.99, 77,856.11 and 18,179.20 is: 27,276.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,888.99 : 77,856.11 = 18,179.20 : x
  2. Step 2: Convert to fraction form
    51,888.99/77,856.11 = 18,179.20/x
  3. Step 3: Cross multiply
    51,888.99x = 77,856.11 × 18,179.20
  4. Step 4: Simplify right side
    51,888.99x = 1,415,361,431.57
  5. Step 5: Solve for x
    x = 1,415,361,431.57/51,888.99
  6. Step 6: Final answer
    x = 27,276.72

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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.