Home / 90,817.22-136,288.47-31,653.38

Finding the Fourth Proportional to 90,817.22, 136,288.47 and 31,653.38

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Solution

The fourth proportional to 90,817.22, 136,288.47 and 31,653.38 is: 47,501.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,817.22 : 136,288.47 = 31,653.38 : x
  2. Step 2: Convert to fraction form
    90,817.22/136,288.47 = 31,653.38/x
  3. Step 3: Cross multiply
    90,817.22x = 136,288.47 × 31,653.38
  4. Step 4: Simplify right side
    90,817.22x = 4,313,990,730.53
  5. Step 5: Solve for x
    x = 4,313,990,730.53/90,817.22
  6. Step 6: Final answer
    x = 47,501.90

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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.