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Finding the Fourth Proportional to 67,889.70, 101,793.65 and 30,443.00

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Solution

The fourth proportional to 67,889.70, 101,793.65 and 30,443.00 is: 45,646.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,889.70 : 101,793.65 = 30,443.00 : x
  2. Step 2: Convert to fraction form
    67,889.70/101,793.65 = 30,443.00/x
  3. Step 3: Cross multiply
    67,889.70x = 101,793.65 × 30,443.00
  4. Step 4: Simplify right side
    67,889.70x = 3,098,903,425.77
  5. Step 5: Solve for x
    x = 3,098,903,425.77/67,889.70
  6. Step 6: Final answer
    x = 45,646.15

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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.