Home / 90,436.63-135,674.39-30,471.06

Finding the Fourth Proportional to 90,436.63, 135,674.39 and 30,471.06

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Solution

The fourth proportional to 90,436.63, 135,674.39 and 30,471.06 is: 45,713.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,436.63 : 135,674.39 = 30,471.06 : x
  2. Step 2: Convert to fraction form
    90,436.63/135,674.39 = 30,471.06/x
  3. Step 3: Cross multiply
    90,436.63x = 135,674.39 × 30,471.06
  4. Step 4: Simplify right side
    90,436.63x = 4,134,142,478.15
  5. Step 5: Solve for x
    x = 4,134,142,478.15/90,436.63
  6. Step 6: Final answer
    x = 45,713.14

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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.