Home / 71,938.68-107,919.54-30,386.04

Finding the Fourth Proportional to 71,938.68, 107,919.54 and 30,386.04

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Solution

The fourth proportional to 71,938.68, 107,919.54 and 30,386.04 is: 45,583.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,938.68 : 107,919.54 = 30,386.04 : x
  2. Step 2: Convert to fraction form
    71,938.68/107,919.54 = 30,386.04/x
  3. Step 3: Cross multiply
    71,938.68x = 107,919.54 × 30,386.04
  4. Step 4: Simplify right side
    71,938.68x = 3,279,247,459.22
  5. Step 5: Solve for x
    x = 3,279,247,459.22/71,938.68
  6. Step 6: Final answer
    x = 45,583.93

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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.