Home / 72,161.52-108,280.96-30,070.72

Finding the Fourth Proportional to 72,161.52, 108,280.96 and 30,070.72

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Solution

The fourth proportional to 72,161.52, 108,280.96 and 30,070.72 is: 45,122.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,161.52 : 108,280.96 = 30,070.72 : x
  2. Step 2: Convert to fraction form
    72,161.52/108,280.96 = 30,070.72/x
  3. Step 3: Cross multiply
    72,161.52x = 108,280.96 × 30,070.72
  4. Step 4: Simplify right side
    72,161.52x = 3,256,086,429.49
  5. Step 5: Solve for x
    x = 3,256,086,429.49/72,161.52
  6. Step 6: Final answer
    x = 45,122.20

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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.