Home / 90,013.53-135,039.42-30,833.31

Finding the Fourth Proportional to 90,013.53, 135,039.42 and 30,833.31

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Solution

The fourth proportional to 90,013.53, 135,039.42 and 30,833.31 is: 46,256.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,013.53 : 135,039.42 = 30,833.31 : x
  2. Step 2: Convert to fraction form
    90,013.53/135,039.42 = 30,833.31/x
  3. Step 3: Cross multiply
    90,013.53x = 135,039.42 × 30,833.31
  4. Step 4: Simplify right side
    90,013.53x = 4,163,712,299.08
  5. Step 5: Solve for x
    x = 4,163,712,299.08/90,013.53
  6. Step 6: Final answer
    x = 46,256.52

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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.