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Finding the Fourth Proportional to 79,189.85, 109,281.99 and 43,379.85

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Solution

The fourth proportional to 79,189.85, 109,281.99 and 43,379.85 is: 59,864.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,189.85 : 109,281.99 = 43,379.85 : x
  2. Step 2: Convert to fraction form
    79,189.85/109,281.99 = 43,379.85/x
  3. Step 3: Cross multiply
    79,189.85x = 109,281.99 × 43,379.85
  4. Step 4: Simplify right side
    79,189.85x = 4,740,636,333.90
  5. Step 5: Solve for x
    x = 4,740,636,333.90/79,189.85
  6. Step 6: Final answer
    x = 59,864.19

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1.5x scale

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.