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Finding the Fourth Proportional to 67,354.88, 92,954.40 and 39,070.40

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Solution

The fourth proportional to 67,354.88, 92,954.40 and 39,070.40 is: 53,919.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,354.88 : 92,954.40 = 39,070.40 : x
  2. Step 2: Convert to fraction form
    67,354.88/92,954.40 = 39,070.40/x
  3. Step 3: Cross multiply
    67,354.88x = 92,954.40 × 39,070.40
  4. Step 4: Simplify right side
    67,354.88x = 3,631,765,589.76
  5. Step 5: Solve for x
    x = 3,631,765,589.76/67,354.88
  6. Step 6: Final answer
    x = 53,919.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.