Home / 90,299.52-135,509.28-40,362.72

Finding the Fourth Proportional to 90,299.52, 135,509.28 and 40,362.72

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Solution

The fourth proportional to 90,299.52, 135,509.28 and 40,362.72 is: 60,570.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,299.52 : 135,509.28 = 40,362.72 : x
  2. Step 2: Convert to fraction form
    90,299.52/135,509.28 = 40,362.72/x
  3. Step 3: Cross multiply
    90,299.52x = 135,509.28 × 40,362.72
  4. Step 4: Simplify right side
    90,299.52x = 5,469,523,126.04
  5. Step 5: Solve for x
    x = 5,469,523,126.04/90,299.52
  6. Step 6: Final answer
    x = 60,570.90

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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.