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Finding the Fourth Proportional to 82,104.40, 123,205.20 and 59,861.80

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Solution

The fourth proportional to 82,104.40, 123,205.20 and 59,861.80 is: 89,828.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,104.40 : 123,205.20 = 59,861.80 : x
  2. Step 2: Convert to fraction form
    82,104.40/123,205.20 = 59,861.80/x
  3. Step 3: Cross multiply
    82,104.40x = 123,205.20 × 59,861.80
  4. Step 4: Simplify right side
    82,104.40x = 7,375,285,041.36
  5. Step 5: Solve for x
    x = 7,375,285,041.36/82,104.40
  6. Step 6: Final answer
    x = 89,828.13

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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.