Home / 90,325.28-135,438.15-31,112.12

Finding the Fourth Proportional to 90,325.28, 135,438.15 and 31,112.12

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Solution

The fourth proportional to 90,325.28, 135,438.15 and 31,112.12 is: 46,651.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,325.28 : 135,438.15 = 31,112.12 : x
  2. Step 2: Convert to fraction form
    90,325.28/135,438.15 = 31,112.12/x
  3. Step 3: Cross multiply
    90,325.28x = 135,438.15 × 31,112.12
  4. Step 4: Simplify right side
    90,325.28x = 4,213,767,975.38
  5. Step 5: Solve for x
    x = 4,213,767,975.38/90,325.28
  6. Step 6: Final answer
    x = 46,651.04

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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.