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Finding the Fourth Proportional to 89,134.60, 133,658.70 and 49,649.80

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Solution

The fourth proportional to 89,134.60, 133,658.70 and 49,649.80 is: 74,450.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,134.60 : 133,658.70 = 49,649.80 : x
  2. Step 2: Convert to fraction form
    89,134.60/133,658.70 = 49,649.80/x
  3. Step 3: Cross multiply
    89,134.60x = 133,658.70 × 49,649.80
  4. Step 4: Simplify right side
    89,134.60x = 6,636,127,723.26
  5. Step 5: Solve for x
    x = 6,636,127,723.26/89,134.60
  6. Step 6: Final answer
    x = 74,450.64

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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.