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Finding the Fourth Proportional to 69,994.87, 96,589.43 and 39,776.20

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Solution

The fourth proportional to 69,994.87, 96,589.43 and 39,776.20 is: 54,889.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,994.87 : 96,589.43 = 39,776.20 : x
  2. Step 2: Convert to fraction form
    69,994.87/96,589.43 = 39,776.20/x
  3. Step 3: Cross multiply
    69,994.87x = 96,589.43 × 39,776.20
  4. Step 4: Simplify right side
    69,994.87x = 3,841,960,194.37
  5. Step 5: Solve for x
    x = 3,841,960,194.37/69,994.87
  6. Step 6: Final answer
    x = 54,889.17

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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.