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Finding the Fourth Proportional to 51,499.80, 77,264.28 and 19,919.52

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Solution

The fourth proportional to 51,499.80, 77,264.28 and 19,919.52 is: 29,884.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,499.80 : 77,264.28 = 19,919.52 : x
  2. Step 2: Convert to fraction form
    51,499.80/77,264.28 = 19,919.52/x
  3. Step 3: Cross multiply
    51,499.80x = 77,264.28 × 19,919.52
  4. Step 4: Simplify right side
    51,499.80x = 1,539,067,370.75
  5. Step 5: Solve for x
    x = 1,539,067,370.75/51,499.80
  6. Step 6: Final answer
    x = 29,884.92

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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.