Home / 90,287.41-135,486.47-40,409.69

Finding the Fourth Proportional to 90,287.41, 135,486.47 and 40,409.69

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Solution

The fourth proportional to 90,287.41, 135,486.47 and 40,409.69 is: 60,639.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,287.41 : 135,486.47 = 40,409.69 : x
  2. Step 2: Convert to fraction form
    90,287.41/135,486.47 = 40,409.69/x
  3. Step 3: Cross multiply
    90,287.41x = 135,486.47 × 40,409.69
  4. Step 4: Simplify right side
    90,287.41x = 5,474,965,675.49
  5. Step 5: Solve for x
    x = 5,474,965,675.49/90,287.41
  6. Step 6: Final answer
    x = 60,639.30

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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.