Home / 90,849.60-136,261.44-28,512

Finding the Fourth Proportional to 90,849.60, 136,261.44 and 28,512

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Solution

The fourth proportional to 90,849.60, 136,261.44 and 28,512 is: 42,763.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,849.60 : 136,261.44 = 28,512 : x
  2. Step 2: Convert to fraction form
    90,849.60/136,261.44 = 28,512/x
  3. Step 3: Cross multiply
    90,849.60x = 136,261.44 × 28,512
  4. Step 4: Simplify right side
    90,849.60x = 3,885,086,177.28
  5. Step 5: Solve for x
    x = 3,885,086,177.28/90,849.60
  6. Step 6: Final answer
    x = 42,763.93

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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.