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Finding the Fourth Proportional to 70,818.86, 106,149.02 and 54,246.87

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Solution

The fourth proportional to 70,818.86, 106,149.02 and 54,246.87 is: 81,309.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,818.86 : 106,149.02 = 54,246.87 : x
  2. Step 2: Convert to fraction form
    70,818.86/106,149.02 = 54,246.87/x
  3. Step 3: Cross multiply
    70,818.86x = 106,149.02 × 54,246.87
  4. Step 4: Simplify right side
    70,818.86x = 5,758,251,817.33
  5. Step 5: Solve for x
    x = 5,758,251,817.33/70,818.86
  6. Step 6: Final answer
    x = 81,309.58

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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.