Home / 90,927.72-136,409.81-31,747.50

Finding the Fourth Proportional to 90,927.72, 136,409.81 and 31,747.50

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Solution

The fourth proportional to 90,927.72, 136,409.81 and 31,747.50 is: 47,627.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,927.72 : 136,409.81 = 31,747.50 : x
  2. Step 2: Convert to fraction form
    90,927.72/136,409.81 = 31,747.50/x
  3. Step 3: Cross multiply
    90,927.72x = 136,409.81 × 31,747.50
  4. Step 4: Simplify right side
    90,927.72x = 4,330,670,284.24
  5. Step 5: Solve for x
    x = 4,330,670,284.24/90,927.72
  6. Step 6: Final answer
    x = 47,627.61

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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.