Home / 90,704.40-136,055.64-28,375.44

Finding the Fourth Proportional to 90,704.40, 136,055.64 and 28,375.44

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Solution

The fourth proportional to 90,704.40, 136,055.64 and 28,375.44 is: 42,562.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,704.40 : 136,055.64 = 28,375.44 : x
  2. Step 2: Convert to fraction form
    90,704.40/136,055.64 = 28,375.44/x
  3. Step 3: Cross multiply
    90,704.40x = 136,055.64 × 28,375.44
  4. Step 4: Simplify right side
    90,704.40x = 3,860,638,649.48
  5. Step 5: Solve for x
    x = 3,860,638,649.48/90,704.40
  6. Step 6: Final answer
    x = 42,562.86

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1.5x scale

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.