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Finding the Fourth Proportional to 55,375.68, 82,931.04 and 30,377.28

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Solution

The fourth proportional to 55,375.68, 82,931.04 and 30,377.28 is: 45,493.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,375.68 : 82,931.04 = 30,377.28 : x
  2. Step 2: Convert to fraction form
    55,375.68/82,931.04 = 30,377.28/x
  3. Step 3: Cross multiply
    55,375.68x = 82,931.04 × 30,377.28
  4. Step 4: Simplify right side
    55,375.68x = 2,519,219,422.77
  5. Step 5: Solve for x
    x = 2,519,219,422.77/55,375.68
  6. Step 6: Final answer
    x = 45,493.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.