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Finding the Fourth Proportional to 64,658.98, 89,227.47 and 39,180.43

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Solution

The fourth proportional to 64,658.98, 89,227.47 and 39,180.43 is: 54,067.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,658.98 : 89,227.47 = 39,180.43 : x
  2. Step 2: Convert to fraction form
    64,658.98/89,227.47 = 39,180.43/x
  3. Step 3: Cross multiply
    64,658.98x = 89,227.47 × 39,180.43
  4. Step 4: Simplify right side
    64,658.98x = 3,495,970,642.41
  5. Step 5: Solve for x
    x = 3,495,970,642.41/64,658.98
  6. Step 6: Final answer
    x = 54,067.83

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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.