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Finding the Fourth Proportional to 83,930.20, 125,895.30 and 64,903.30

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Solution

The fourth proportional to 83,930.20, 125,895.30 and 64,903.30 is: 97,354.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,930.20 : 125,895.30 = 64,903.30 : x
  2. Step 2: Convert to fraction form
    83,930.20/125,895.30 = 64,903.30/x
  3. Step 3: Cross multiply
    83,930.20x = 125,895.30 × 64,903.30
  4. Step 4: Simplify right side
    83,930.20x = 8,171,020,424.49
  5. Step 5: Solve for x
    x = 8,171,020,424.49/83,930.20
  6. Step 6: Final answer
    x = 97,354.95

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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.