Home / 90,880.35-136,310.82-31,717.14

Finding the Fourth Proportional to 90,880.35, 136,310.82 and 31,717.14

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Solution

The fourth proportional to 90,880.35, 136,310.82 and 31,717.14 is: 47,572.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,880.35 : 136,310.82 = 31,717.14 : x
  2. Step 2: Convert to fraction form
    90,880.35/136,310.82 = 31,717.14/x
  3. Step 3: Cross multiply
    90,880.35x = 136,310.82 × 31,717.14
  4. Step 4: Simplify right side
    90,880.35x = 4,323,389,361.45
  5. Step 5: Solve for x
    x = 4,323,389,361.45/90,880.35
  6. Step 6: Final answer
    x = 47,572.32

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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.