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Finding the Fourth Proportional to 76,949.44, 105,953.36 and 65,593.48

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Solution

The fourth proportional to 76,949.44, 105,953.36 and 65,593.48 is: 90,317.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,949.44 : 105,953.36 = 65,593.48 : x
  2. Step 2: Convert to fraction form
    76,949.44/105,953.36 = 65,593.48/x
  3. Step 3: Cross multiply
    76,949.44x = 105,953.36 × 65,593.48
  4. Step 4: Simplify right side
    76,949.44x = 6,949,849,600.09
  5. Step 5: Solve for x
    x = 6,949,849,600.09/76,949.44
  6. Step 6: Final answer
    x = 90,317.09

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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.