Home / 90,706.32-135,920.88-38,086.92

Finding the Fourth Proportional to 90,706.32, 135,920.88 and 38,086.92

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Solution

The fourth proportional to 90,706.32, 135,920.88 and 38,086.92 is: 57,072.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,706.32 : 135,920.88 = 38,086.92 : x
  2. Step 2: Convert to fraction form
    90,706.32/135,920.88 = 38,086.92/x
  3. Step 3: Cross multiply
    90,706.32x = 135,920.88 × 38,086.92
  4. Step 4: Simplify right side
    90,706.32x = 5,176,807,682.89
  5. Step 5: Solve for x
    x = 5,176,807,682.89/90,706.32
  6. Step 6: Final answer
    x = 57,072.18

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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.