Home / 90,179.51-135,287.71-31,007.49

Finding the Fourth Proportional to 90,179.51, 135,287.71 and 31,007.49

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Solution

The fourth proportional to 90,179.51, 135,287.71 and 31,007.49 is: 46,517.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,179.51 : 135,287.71 = 31,007.49 : x
  2. Step 2: Convert to fraction form
    90,179.51/135,287.71 = 31,007.49/x
  3. Step 3: Cross multiply
    90,179.51x = 135,287.71 × 31,007.49
  4. Step 4: Simplify right side
    90,179.51x = 4,194,931,638.51
  5. Step 5: Solve for x
    x = 4,194,931,638.51/90,179.51
  6. Step 6: Final answer
    x = 46,517.57

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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.