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Finding the Fourth Proportional to 79,407.38, 119,109.39 and 20,243.06

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Solution

The fourth proportional to 79,407.38, 119,109.39 and 20,243.06 is: 30,364.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,407.38 : 119,109.39 = 20,243.06 : x
  2. Step 2: Convert to fraction form
    79,407.38/119,109.39 = 20,243.06/x
  3. Step 3: Cross multiply
    79,407.38x = 119,109.39 × 20,243.06
  4. Step 4: Simplify right side
    79,407.38x = 2,411,138,528.33
  5. Step 5: Solve for x
    x = 2,411,138,528.33/79,407.38
  6. Step 6: Final answer
    x = 30,364.16

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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.