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Finding the Fourth Proportional to 79,505.10, 119,256.81 and 20,340.30

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Solution

The fourth proportional to 79,505.10, 119,256.81 and 20,340.30 is: 30,510.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,505.10 : 119,256.81 = 20,340.30 : x
  2. Step 2: Convert to fraction form
    79,505.10/119,256.81 = 20,340.30/x
  3. Step 3: Cross multiply
    79,505.10x = 119,256.81 × 20,340.30
  4. Step 4: Simplify right side
    79,505.10x = 2,425,719,292.44
  5. Step 5: Solve for x
    x = 2,425,719,292.44/79,505.10
  6. Step 6: Final answer
    x = 30,510.24

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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.