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Finding the Fourth Proportional to 80,061.33, 119,999.54 and 30,109.54

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Solution

The fourth proportional to 80,061.33, 119,999.54 and 30,109.54 is: 45,129.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,061.33 : 119,999.54 = 30,109.54 : x
  2. Step 2: Convert to fraction form
    80,061.33/119,999.54 = 30,109.54/x
  3. Step 3: Cross multiply
    80,061.33x = 119,999.54 × 30,109.54
  4. Step 4: Simplify right side
    80,061.33x = 3,613,130,949.61
  5. Step 5: Solve for x
    x = 3,613,130,949.61/80,061.33
  6. Step 6: Final answer
    x = 45,129.54

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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.