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Finding the Fourth Proportional to 45,205.40, 67,808.10 and 21,834.20

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Solution

The fourth proportional to 45,205.40, 67,808.10 and 21,834.20 is: 32,751.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,205.40 : 67,808.10 = 21,834.20 : x
  2. Step 2: Convert to fraction form
    45,205.40/67,808.10 = 21,834.20/x
  3. Step 3: Cross multiply
    45,205.40x = 67,808.10 × 21,834.20
  4. Step 4: Simplify right side
    45,205.40x = 1,480,535,617.02
  5. Step 5: Solve for x
    x = 1,480,535,617.02/45,205.40
  6. Step 6: Final answer
    x = 32,751.30

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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.