Home / 90,791.71-136,188.17-31,628.50

Finding the Fourth Proportional to 90,791.71, 136,188.17 and 31,628.50

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Solution

The fourth proportional to 90,791.71, 136,188.17 and 31,628.50 is: 47,442.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,791.71 : 136,188.17 = 31,628.50 : x
  2. Step 2: Convert to fraction form
    90,791.71/136,188.17 = 31,628.50/x
  3. Step 3: Cross multiply
    90,791.71x = 136,188.17 × 31,628.50
  4. Step 4: Simplify right side
    90,791.71x = 4,307,427,534.85
  5. Step 5: Solve for x
    x = 4,307,427,534.85/90,791.71
  6. Step 6: Final answer
    x = 47,442.96

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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.