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Finding the Fourth Proportional to 51,662.86, 71,285.30 and 28,998.76

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Solution

The fourth proportional to 51,662.86, 71,285.30 and 28,998.76 is: 40,012.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,662.86 : 71,285.30 = 28,998.76 : x
  2. Step 2: Convert to fraction form
    51,662.86/71,285.30 = 28,998.76/x
  3. Step 3: Cross multiply
    51,662.86x = 71,285.30 × 28,998.76
  4. Step 4: Simplify right side
    51,662.86x = 2,067,185,306.23
  5. Step 5: Solve for x
    x = 2,067,185,306.23/51,662.86
  6. Step 6: Final answer
    x = 40,012.99

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1.5x scale

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.