Home / 90,042.65-135,100.31-40,088.61

Finding the Fourth Proportional to 90,042.65, 135,100.31 and 40,088.61

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Solution

The fourth proportional to 90,042.65, 135,100.31 and 40,088.61 is: 60,149.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,042.65 : 135,100.31 = 40,088.61 : x
  2. Step 2: Convert to fraction form
    90,042.65/135,100.31 = 40,088.61/x
  3. Step 3: Cross multiply
    90,042.65x = 135,100.31 × 40,088.61
  4. Step 4: Simplify right side
    90,042.65x = 5,415,983,438.03
  5. Step 5: Solve for x
    x = 5,415,983,438.03/90,042.65
  6. Step 6: Final answer
    x = 60,149.09

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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.