Home / 90,448.12-135,672.19-31,251.50

Finding the Fourth Proportional to 90,448.12, 135,672.19 and 31,251.50

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Solution

The fourth proportional to 90,448.12, 135,672.19 and 31,251.50 is: 46,877.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,448.12 : 135,672.19 = 31,251.50 : x
  2. Step 2: Convert to fraction form
    90,448.12/135,672.19 = 31,251.50/x
  3. Step 3: Cross multiply
    90,448.12x = 135,672.19 × 31,251.50
  4. Step 4: Simplify right side
    90,448.12x = 4,239,958,904.38
  5. Step 5: Solve for x
    x = 4,239,958,904.38/90,448.12
  6. Step 6: Final answer
    x = 46,877.25

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1.5x scale

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.