Home / 90,666.88-135,948-35,198.08

Finding the Fourth Proportional to 90,666.88, 135,948 and 35,198.08

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Solution

The fourth proportional to 90,666.88, 135,948 and 35,198.08 is: 52,776.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,666.88 : 135,948 = 35,198.08 : x
  2. Step 2: Convert to fraction form
    90,666.88/135,948 = 35,198.08/x
  3. Step 3: Cross multiply
    90,666.88x = 135,948 × 35,198.08
  4. Step 4: Simplify right side
    90,666.88x = 4,785,108,579.84
  5. Step 5: Solve for x
    x = 4,785,108,579.84/90,666.88
  6. Step 6: Final answer
    x = 52,776.81

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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.