Home / 90,332.84-135,450.39-71,732.54

Finding the Fourth Proportional to 90,332.84, 135,450.39 and 71,732.54

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Solution

The fourth proportional to 90,332.84, 135,450.39 and 71,732.54 is: 107,560.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,332.84 : 135,450.39 = 71,732.54 : x
  2. Step 2: Convert to fraction form
    90,332.84/135,450.39 = 71,732.54/x
  3. Step 3: Cross multiply
    90,332.84x = 135,450.39 × 71,732.54
  4. Step 4: Simplify right side
    90,332.84x = 9,716,200,518.69
  5. Step 5: Solve for x
    x = 9,716,200,518.69/90,332.84
  6. Step 6: Final answer
    x = 107,560.00

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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.