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Finding the Fourth Proportional to 71,737.12, 98,994.48 and 39,904.96

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Solution

The fourth proportional to 71,737.12, 98,994.48 and 39,904.96 is: 55,067.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,737.12 : 98,994.48 = 39,904.96 : x
  2. Step 2: Convert to fraction form
    71,737.12/98,994.48 = 39,904.96/x
  3. Step 3: Cross multiply
    71,737.12x = 98,994.48 × 39,904.96
  4. Step 4: Simplify right side
    71,737.12x = 3,950,370,764.62
  5. Step 5: Solve for x
    x = 3,950,370,764.62/71,737.12
  6. Step 6: Final answer
    x = 55,067.32

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1.5x scale

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.