Home / 90,785.85-136,182.44-31,627.50

Finding the Fourth Proportional to 90,785.85, 136,182.44 and 31,627.50

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Solution

The fourth proportional to 90,785.85, 136,182.44 and 31,627.50 is: 47,442.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,785.85 : 136,182.44 = 31,627.50 : x
  2. Step 2: Convert to fraction form
    90,785.85/136,182.44 = 31,627.50/x
  3. Step 3: Cross multiply
    90,785.85x = 136,182.44 × 31,627.50
  4. Step 4: Simplify right side
    90,785.85x = 4,307,110,121.10
  5. Step 5: Solve for x
    x = 4,307,110,121.10/90,785.85
  6. Step 6: Final answer
    x = 47,442.53

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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.