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Finding the Fourth Proportional to 64,700.75, 89,288.40 and 36,406.44

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Solution

The fourth proportional to 64,700.75, 89,288.40 and 36,406.44 is: 50,241.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,700.75 : 89,288.40 = 36,406.44 : x
  2. Step 2: Convert to fraction form
    64,700.75/89,288.40 = 36,406.44/x
  3. Step 3: Cross multiply
    64,700.75x = 89,288.40 × 36,406.44
  4. Step 4: Simplify right side
    64,700.75x = 3,250,672,777.30
  5. Step 5: Solve for x
    x = 3,250,672,777.30/64,700.75
  6. Step 6: Final answer
    x = 50,241.66

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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.