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Finding the Fourth Proportional to 67,658.48, 93,376 and 39,379.76

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Solution

The fourth proportional to 67,658.48, 93,376 and 39,379.76 is: 54,348.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,658.48 : 93,376 = 39,379.76 : x
  2. Step 2: Convert to fraction form
    67,658.48/93,376 = 39,379.76/x
  3. Step 3: Cross multiply
    67,658.48x = 93,376 × 39,379.76
  4. Step 4: Simplify right side
    67,658.48x = 3,677,124,469.76
  5. Step 5: Solve for x
    x = 3,677,124,469.76/67,658.48
  6. Step 6: Final answer
    x = 54,348.32

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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.