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Finding the Fourth Proportional to 82,875.69, 124,313.49 and 20,546.19

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Solution

The fourth proportional to 82,875.69, 124,313.49 and 20,546.19 is: 30,819.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,875.69 : 124,313.49 = 20,546.19 : x
  2. Step 2: Convert to fraction form
    82,875.69/124,313.49 = 20,546.19/x
  3. Step 3: Cross multiply
    82,875.69x = 124,313.49 × 20,546.19
  4. Step 4: Simplify right side
    82,875.69x = 2,554,168,585.10
  5. Step 5: Solve for x
    x = 2,554,168,585.10/82,875.69
  6. Step 6: Final answer
    x = 30,819.27

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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.