Home / 90,790.21-136,185.92-31,627.00

Finding the Fourth Proportional to 90,790.21, 136,185.92 and 31,627.00

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Solution

The fourth proportional to 90,790.21, 136,185.92 and 31,627.00 is: 47,440.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,790.21 : 136,185.92 = 31,627.00 : x
  2. Step 2: Convert to fraction form
    90,790.21/136,185.92 = 31,627.00/x
  3. Step 3: Cross multiply
    90,790.21x = 136,185.92 × 31,627.00
  4. Step 4: Simplify right side
    90,790.21x = 4,307,151,252.78
  5. Step 5: Solve for x
    x = 4,307,151,252.78/90,790.21
  6. Step 6: Final answer
    x = 47,440.70

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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.