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Finding the Fourth Proportional to 72,384.30, 108,576.45 and 19,799.10

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Solution

The fourth proportional to 72,384.30, 108,576.45 and 19,799.10 is: 29,698.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,384.30 : 108,576.45 = 19,799.10 : x
  2. Step 2: Convert to fraction form
    72,384.30/108,576.45 = 19,799.10/x
  3. Step 3: Cross multiply
    72,384.30x = 108,576.45 × 19,799.10
  4. Step 4: Simplify right side
    72,384.30x = 2,149,715,991.20
  5. Step 5: Solve for x
    x = 2,149,715,991.20/72,384.30
  6. Step 6: Final answer
    x = 29,698.65

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Similar ratio
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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.