Home / 90,201.47-135,299.41-42,850.64

Finding the Fourth Proportional to 90,201.47, 135,299.41 and 42,850.64

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Solution

The fourth proportional to 90,201.47, 135,299.41 and 42,850.64 is: 64,274.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,201.47 : 135,299.41 = 42,850.64 : x
  2. Step 2: Convert to fraction form
    90,201.47/135,299.41 = 42,850.64/x
  3. Step 3: Cross multiply
    90,201.47x = 135,299.41 × 42,850.64
  4. Step 4: Simplify right side
    90,201.47x = 5,797,666,541.24
  5. Step 5: Solve for x
    x = 5,797,666,541.24/90,201.47
  6. Step 6: Final answer
    x = 64,274.64

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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.