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Finding the Fourth Proportional to 82,429.40, 123,636.90 and 27,025.40

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Solution

The fourth proportional to 82,429.40, 123,636.90 and 27,025.40 is: 40,535.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,429.40 : 123,636.90 = 27,025.40 : x
  2. Step 2: Convert to fraction form
    82,429.40/123,636.90 = 27,025.40/x
  3. Step 3: Cross multiply
    82,429.40x = 123,636.90 × 27,025.40
  4. Step 4: Simplify right side
    82,429.40x = 3,341,336,677.26
  5. Step 5: Solve for x
    x = 3,341,336,677.26/82,429.40
  6. Step 6: Final answer
    x = 40,535.74

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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.