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Finding the Fourth Proportional to 74,373.82, 111,560.72 and 18,969.82

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Solution

The fourth proportional to 74,373.82, 111,560.72 and 18,969.82 is: 28,454.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,373.82 : 111,560.72 = 18,969.82 : x
  2. Step 2: Convert to fraction form
    74,373.82/111,560.72 = 18,969.82/x
  3. Step 3: Cross multiply
    74,373.82x = 111,560.72 × 18,969.82
  4. Step 4: Simplify right side
    74,373.82x = 2,116,286,219.67
  5. Step 5: Solve for x
    x = 2,116,286,219.67/74,373.82
  6. Step 6: Final answer
    x = 28,454.72

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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.