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Finding the Fourth Proportional to 79,566.88, 119,341.42 and 20,403.94

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Solution

The fourth proportional to 79,566.88, 119,341.42 and 20,403.94 is: 30,603.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,566.88 : 119,341.42 = 20,403.94 : x
  2. Step 2: Convert to fraction form
    79,566.88/119,341.42 = 20,403.94/x
  3. Step 3: Cross multiply
    79,566.88x = 119,341.42 × 20,403.94
  4. Step 4: Simplify right side
    79,566.88x = 2,435,035,173.19
  5. Step 5: Solve for x
    x = 2,435,035,173.19/79,566.88
  6. Step 6: Final answer
    x = 30,603.63

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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.