Home / 90,956.48-136,428.06-28,644.80

Finding the Fourth Proportional to 90,956.48, 136,428.06 and 28,644.80

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Solution

The fourth proportional to 90,956.48, 136,428.06 and 28,644.80 is: 42,965.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,956.48 : 136,428.06 = 28,644.80 : x
  2. Step 2: Convert to fraction form
    90,956.48/136,428.06 = 28,644.80/x
  3. Step 3: Cross multiply
    90,956.48x = 136,428.06 × 28,644.80
  4. Step 4: Simplify right side
    90,956.48x = 3,907,954,493.09
  5. Step 5: Solve for x
    x = 3,907,954,493.09/90,956.48
  6. Step 6: Final answer
    x = 42,965.10

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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.