Home / 90,450.28-135,707.82-31,291.84

Finding the Fourth Proportional to 90,450.28, 135,707.82 and 31,291.84

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Solution

The fourth proportional to 90,450.28, 135,707.82 and 31,291.84 is: 46,948.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,450.28 : 135,707.82 = 31,291.84 : x
  2. Step 2: Convert to fraction form
    90,450.28/135,707.82 = 31,291.84/x
  3. Step 3: Cross multiply
    90,450.28x = 135,707.82 × 31,291.84
  4. Step 4: Simplify right side
    90,450.28x = 4,246,547,390.19
  5. Step 5: Solve for x
    x = 4,246,547,390.19/90,450.28
  6. Step 6: Final answer
    x = 46,948.97

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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.