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Finding the Fourth Proportional to 72,604.17, 108,888.98 and 20,017.89

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Solution

The fourth proportional to 72,604.17, 108,888.98 and 20,017.89 is: 30,022.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,604.17 : 108,888.98 = 20,017.89 : x
  2. Step 2: Convert to fraction form
    72,604.17/108,888.98 = 20,017.89/x
  3. Step 3: Cross multiply
    72,604.17x = 108,888.98 × 20,017.89
  4. Step 4: Simplify right side
    72,604.17x = 2,179,727,523.76
  5. Step 5: Solve for x
    x = 2,179,727,523.76/72,604.17
  6. Step 6: Final answer
    x = 30,022.07

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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.