Home / 90,243.81-135,364.08-31,078.17

Finding the Fourth Proportional to 90,243.81, 135,364.08 and 31,078.17

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Solution

The fourth proportional to 90,243.81, 135,364.08 and 31,078.17 is: 46,616.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,243.81 : 135,364.08 = 31,078.17 : x
  2. Step 2: Convert to fraction form
    90,243.81/135,364.08 = 31,078.17/x
  3. Step 3: Cross multiply
    90,243.81x = 135,364.08 × 31,078.17
  4. Step 4: Simplify right side
    90,243.81x = 4,206,867,890.13
  5. Step 5: Solve for x
    x = 4,206,867,890.13/90,243.81
  6. Step 6: Final answer
    x = 46,616.69

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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.