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Finding the Fourth Proportional to 64,710.80, 89,297.16 and 36,414.80

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Solution

The fourth proportional to 64,710.80, 89,297.16 and 36,414.80 is: 50,250.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,710.80 : 89,297.16 = 36,414.80 : x
  2. Step 2: Convert to fraction form
    64,710.80/89,297.16 = 36,414.80/x
  3. Step 3: Cross multiply
    64,710.80x = 89,297.16 × 36,414.80
  4. Step 4: Simplify right side
    64,710.80x = 3,251,738,221.97
  5. Step 5: Solve for x
    x = 3,251,738,221.97/64,710.80
  6. Step 6: Final answer
    x = 50,250.32

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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.