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Finding the Fourth Proportional to 56,764.38, 78,322.86 and 32,889.60

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Solution

The fourth proportional to 56,764.38, 78,322.86 and 32,889.60 is: 45,380.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,764.38 : 78,322.86 = 32,889.60 : x
  2. Step 2: Convert to fraction form
    56,764.38/78,322.86 = 32,889.60/x
  3. Step 3: Cross multiply
    56,764.38x = 78,322.86 × 32,889.60
  4. Step 4: Simplify right side
    56,764.38x = 2,576,007,536.26
  5. Step 5: Solve for x
    x = 2,576,007,536.26/56,764.38
  6. Step 6: Final answer
    x = 45,380.70

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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.