Home / 72,515.63-108,778.68-30,353.29

Finding the Fourth Proportional to 72,515.63, 108,778.68 and 30,353.29

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Solution

The fourth proportional to 72,515.63, 108,778.68 and 30,353.29 is: 45,532.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,515.63 : 108,778.68 = 30,353.29 : x
  2. Step 2: Convert to fraction form
    72,515.63/108,778.68 = 30,353.29/x
  3. Step 3: Cross multiply
    72,515.63x = 108,778.68 × 30,353.29
  4. Step 4: Simplify right side
    72,515.63x = 3,301,790,275.96
  5. Step 5: Solve for x
    x = 3,301,790,275.96/72,515.63
  6. Step 6: Final answer
    x = 45,532.12

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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.