Home / 90,623.16-135,959.24-64,493.78

Finding the Fourth Proportional to 90,623.16, 135,959.24 and 64,493.78

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Solution

The fourth proportional to 90,623.16, 135,959.24 and 64,493.78 is: 96,758.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,623.16 : 135,959.24 = 64,493.78 : x
  2. Step 2: Convert to fraction form
    90,623.16/135,959.24 = 64,493.78/x
  3. Step 3: Cross multiply
    90,623.16x = 135,959.24 × 64,493.78
  4. Step 4: Simplify right side
    90,623.16x = 8,768,524,794.97
  5. Step 5: Solve for x
    x = 8,768,524,794.97/90,623.16
  6. Step 6: Final answer
    x = 96,758.10

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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.