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Finding the Fourth Proportional to 59,439.90, 89,163.90 and 18,910.20

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Solution

The fourth proportional to 59,439.90, 89,163.90 and 18,910.20 is: 28,366.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,439.90 : 89,163.90 = 18,910.20 : x
  2. Step 2: Convert to fraction form
    59,439.90/89,163.90 = 18,910.20/x
  3. Step 3: Cross multiply
    59,439.90x = 89,163.90 × 18,910.20
  4. Step 4: Simplify right side
    59,439.90x = 1,686,107,181.78
  5. Step 5: Solve for x
    x = 1,686,107,181.78/59,439.90
  6. Step 6: Final answer
    x = 28,366.59

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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.