Home / 72,143.13-108,234.66-30,043.02

Finding the Fourth Proportional to 72,143.13, 108,234.66 and 30,043.02

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Solution

The fourth proportional to 72,143.13, 108,234.66 and 30,043.02 is: 45,072.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,143.13 : 108,234.66 = 30,043.02 : x
  2. Step 2: Convert to fraction form
    72,143.13/108,234.66 = 30,043.02/x
  3. Step 3: Cross multiply
    72,143.13x = 108,234.66 × 30,043.02
  4. Step 4: Simplify right side
    72,143.13x = 3,251,696,055.07
  5. Step 5: Solve for x
    x = 3,251,696,055.07/72,143.13
  6. Step 6: Final answer
    x = 45,072.84

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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.