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Finding the Fourth Proportional to 71,658.61, 98,717.94 and 50,108.05

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Solution

The fourth proportional to 71,658.61, 98,717.94 and 50,108.05 is: 69,029.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,658.61 : 98,717.94 = 50,108.05 : x
  2. Step 2: Convert to fraction form
    71,658.61/98,717.94 = 50,108.05/x
  3. Step 3: Cross multiply
    71,658.61x = 98,717.94 × 50,108.05
  4. Step 4: Simplify right side
    71,658.61x = 4,946,563,596.81
  5. Step 5: Solve for x
    x = 4,946,563,596.81/71,658.61
  6. Step 6: Final answer
    x = 69,029.58

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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.