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Finding the Fourth Proportional to 37,318.90, 55,978.35 and 12,694.90

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Solution

The fourth proportional to 37,318.90, 55,978.35 and 12,694.90 is: 19,042.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,318.90 : 55,978.35 = 12,694.90 : x
  2. Step 2: Convert to fraction form
    37,318.90/55,978.35 = 12,694.90/x
  3. Step 3: Cross multiply
    37,318.90x = 55,978.35 × 12,694.90
  4. Step 4: Simplify right side
    37,318.90x = 710,639,555.42
  5. Step 5: Solve for x
    x = 710,639,555.42/37,318.90
  6. Step 6: Final answer
    x = 19,042.35

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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.