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Finding the Fourth Proportional to 72,433.85, 108,615.20 and 30,301.29

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Solution

The fourth proportional to 72,433.85, 108,615.20 and 30,301.29 is: 45,437.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,433.85 : 108,615.20 = 30,301.29 : x
  2. Step 2: Convert to fraction form
    72,433.85/108,615.20 = 30,301.29/x
  3. Step 3: Cross multiply
    72,433.85x = 108,615.20 × 30,301.29
  4. Step 4: Simplify right side
    72,433.85x = 3,291,180,522.10
  5. Step 5: Solve for x
    x = 3,291,180,522.10/72,433.85
  6. Step 6: Final answer
    x = 45,437.05

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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.