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Finding the Fourth Proportional to 67,930.18, 101,900.73 and 25,830.40

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Solution

The fourth proportional to 67,930.18, 101,900.73 and 25,830.40 is: 38,747.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,930.18 : 101,900.73 = 25,830.40 : x
  2. Step 2: Convert to fraction form
    67,930.18/101,900.73 = 25,830.40/x
  3. Step 3: Cross multiply
    67,930.18x = 101,900.73 × 25,830.40
  4. Step 4: Simplify right side
    67,930.18x = 2,632,136,616.19
  5. Step 5: Solve for x
    x = 2,632,136,616.19/67,930.18
  6. Step 6: Final answer
    x = 38,747.68

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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.