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Finding the Fourth Proportional to 79,714.21, 119,578.65 and 20,550.10

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Solution

The fourth proportional to 79,714.21, 119,578.65 and 20,550.10 is: 30,827.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,714.21 : 119,578.65 = 20,550.10 : x
  2. Step 2: Convert to fraction form
    79,714.21/119,578.65 = 20,550.10/x
  3. Step 3: Cross multiply
    79,714.21x = 119,578.65 × 20,550.10
  4. Step 4: Simplify right side
    79,714.21x = 2,457,353,215.37
  5. Step 5: Solve for x
    x = 2,457,353,215.37/79,714.21
  6. Step 6: Final answer
    x = 30,827.04

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1.5x scale

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.