Home / 90,701.40-136,005.43-40,738.62

Finding the Fourth Proportional to 90,701.40, 136,005.43 and 40,738.62

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Solution

The fourth proportional to 90,701.40, 136,005.43 and 40,738.62 is: 61,086.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,701.40 : 136,005.43 = 40,738.62 : x
  2. Step 2: Convert to fraction form
    90,701.40/136,005.43 = 40,738.62/x
  3. Step 3: Cross multiply
    90,701.40x = 136,005.43 × 40,738.62
  4. Step 4: Simplify right side
    90,701.40x = 5,540,673,632.75
  5. Step 5: Solve for x
    x = 5,540,673,632.75/90,701.40
  6. Step 6: Final answer
    x = 61,086.97

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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.