Home / 72,660.19-108,996.54-20,069.68

Finding the Fourth Proportional to 72,660.19, 108,996.54 and 20,069.68

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Solution

The fourth proportional to 72,660.19, 108,996.54 and 20,069.68 is: 30,106.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,660.19 : 108,996.54 = 20,069.68 : x
  2. Step 2: Convert to fraction form
    72,660.19/108,996.54 = 20,069.68/x
  3. Step 3: Cross multiply
    72,660.19x = 108,996.54 × 20,069.68
  4. Step 4: Simplify right side
    72,660.19x = 2,187,525,678.91
  5. Step 5: Solve for x
    x = 2,187,525,678.91/72,660.19
  6. Step 6: Final answer
    x = 30,106.25

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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.