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Finding the Fourth Proportional to 45,165.81, 67,694.04 and 39,851.40

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Solution

The fourth proportional to 45,165.81, 67,694.04 and 39,851.40 is: 59,728.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,165.81 : 67,694.04 = 39,851.40 : x
  2. Step 2: Convert to fraction form
    45,165.81/67,694.04 = 39,851.40/x
  3. Step 3: Cross multiply
    45,165.81x = 67,694.04 × 39,851.40
  4. Step 4: Simplify right side
    45,165.81x = 2,697,702,265.66
  5. Step 5: Solve for x
    x = 2,697,702,265.66/45,165.81
  6. Step 6: Final answer
    x = 59,728.86

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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.