Home / 90,786.10-136,182.80-31,627.75

Finding the Fourth Proportional to 90,786.10, 136,182.80 and 31,627.75

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Solution

The fourth proportional to 90,786.10, 136,182.80 and 31,627.75 is: 47,442.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,786.10 : 136,182.80 = 31,627.75 : x
  2. Step 2: Convert to fraction form
    90,786.10/136,182.80 = 31,627.75/x
  3. Step 3: Cross multiply
    90,786.10x = 136,182.80 × 31,627.75
  4. Step 4: Simplify right side
    90,786.10x = 4,307,155,552.70
  5. Step 5: Solve for x
    x = 4,307,155,552.70/90,786.10
  6. Step 6: Final answer
    x = 47,442.90

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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.