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Finding the Fourth Proportional to 64,219.20, 96,328.80 and 16,834.20

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Solution

The fourth proportional to 64,219.20, 96,328.80 and 16,834.20 is: 25,251.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,219.20 : 96,328.80 = 16,834.20 : x
  2. Step 2: Convert to fraction form
    64,219.20/96,328.80 = 16,834.20/x
  3. Step 3: Cross multiply
    64,219.20x = 96,328.80 × 16,834.20
  4. Step 4: Simplify right side
    64,219.20x = 1,621,618,284.96
  5. Step 5: Solve for x
    x = 1,621,618,284.96/64,219.20
  6. Step 6: Final answer
    x = 25,251.30

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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.