Home / 90,419.46-135,623.71-40,486.14

Finding the Fourth Proportional to 90,419.46, 135,623.71 and 40,486.14

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Solution

The fourth proportional to 90,419.46, 135,623.71 and 40,486.14 is: 60,726.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,419.46 : 135,623.71 = 40,486.14 : x
  2. Step 2: Convert to fraction form
    90,419.46/135,623.71 = 40,486.14/x
  3. Step 3: Cross multiply
    90,419.46x = 135,623.71 × 40,486.14
  4. Step 4: Simplify right side
    90,419.46x = 5,490,880,560.99
  5. Step 5: Solve for x
    x = 5,490,880,560.99/90,419.46
  6. Step 6: Final answer
    x = 60,726.76

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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.