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Finding the Fourth Proportional to 72,924.66, 100,635.44 and 40,658.90

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Solution

The fourth proportional to 72,924.66, 100,635.44 and 40,658.90 is: 56,108.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,924.66 : 100,635.44 = 40,658.90 : x
  2. Step 2: Convert to fraction form
    72,924.66/100,635.44 = 40,658.90/x
  3. Step 3: Cross multiply
    72,924.66x = 100,635.44 × 40,658.90
  4. Step 4: Simplify right side
    72,924.66x = 4,091,725,584.94
  5. Step 5: Solve for x
    x = 4,091,725,584.94/72,924.66
  6. Step 6: Final answer
    x = 56,108.94

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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.