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Finding the Fourth Proportional to 43,935, 65,900.95 and 12,345

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Solution

The fourth proportional to 43,935, 65,900.95 and 12,345 is: 18,517.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,935 : 65,900.95 = 12,345 : x
  2. Step 2: Convert to fraction form
    43,935/65,900.95 = 12,345/x
  3. Step 3: Cross multiply
    43,935x = 65,900.95 × 12,345
  4. Step 4: Simplify right side
    43,935x = 813,547,227.75
  5. Step 5: Solve for x
    x = 813,547,227.75/43,935
  6. Step 6: Final answer
    x = 18,517.06

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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.