Home / 90,500.68-135,718.62-31,320.46

Finding the Fourth Proportional to 90,500.68, 135,718.62 and 31,320.46

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Solution

The fourth proportional to 90,500.68, 135,718.62 and 31,320.46 is: 46,969.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,500.68 : 135,718.62 = 31,320.46 : x
  2. Step 2: Convert to fraction form
    90,500.68/135,718.62 = 31,320.46/x
  3. Step 3: Cross multiply
    90,500.68x = 135,718.62 × 31,320.46
  4. Step 4: Simplify right side
    90,500.68x = 4,250,769,608.97
  5. Step 5: Solve for x
    x = 4,250,769,608.97/90,500.68
  6. Step 6: Final answer
    x = 46,969.48

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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.