Home / 85,723,930.64-128,603,611.20-28,219,652.48

Finding the Fourth Proportional to 85,723,930.64, 128,603,611.20 and 28,219,652.48

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Solution

The fourth proportional to 85,723,930.64, 128,603,611.20 and 28,219,652.48 is: 42,335,310.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,723,930.64 : 128,603,611.20 = 28,219,652.48 : x
  2. Step 2: Convert to fraction form
    85,723,930.64/128,603,611.20 = 28,219,652.48/x
  3. Step 3: Cross multiply
    85,723,930.64x = 128,603,611.20 × 28,219,652.48
  4. Step 4: Simplify right side
    85,723,930.64x = 3,629,149,215,737,036
  5. Step 5: Solve for x
    x = 3,629,149,215,737,036/85,723,930.64
  6. Step 6: Final answer
    x = 42,335,310.44

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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.