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Finding the Fourth Proportional to 67,708.50, 101,562.78 and 18,460.50

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Solution

The fourth proportional to 67,708.50, 101,562.78 and 18,460.50 is: 27,690.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,708.50 : 101,562.78 = 18,460.50 : x
  2. Step 2: Convert to fraction form
    67,708.50/101,562.78 = 18,460.50/x
  3. Step 3: Cross multiply
    67,708.50x = 101,562.78 × 18,460.50
  4. Step 4: Simplify right side
    67,708.50x = 1,874,899,700.19
  5. Step 5: Solve for x
    x = 1,874,899,700.19/67,708.50
  6. Step 6: Final answer
    x = 27,690.76

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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.