Home / 90,465.55-135,711.69-31,285.33

Finding the Fourth Proportional to 90,465.55, 135,711.69 and 31,285.33

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Solution

The fourth proportional to 90,465.55, 135,711.69 and 31,285.33 is: 46,932.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,465.55 : 135,711.69 = 31,285.33 : x
  2. Step 2: Convert to fraction form
    90,465.55/135,711.69 = 31,285.33/x
  3. Step 3: Cross multiply
    90,465.55x = 135,711.69 × 31,285.33
  4. Step 4: Simplify right side
    90,465.55x = 4,245,785,006.51
  5. Step 5: Solve for x
    x = 4,245,785,006.51/90,465.55
  6. Step 6: Final answer
    x = 46,932.62

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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.