Home / 90,330.80-135,558.36-31,166.51

Finding the Fourth Proportional to 90,330.80, 135,558.36 and 31,166.51

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Solution

The fourth proportional to 90,330.80, 135,558.36 and 31,166.51 is: 46,771.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,330.80 : 135,558.36 = 31,166.51 : x
  2. Step 2: Convert to fraction form
    90,330.80/135,558.36 = 31,166.51/x
  3. Step 3: Cross multiply
    90,330.80x = 135,558.36 × 31,166.51
  4. Step 4: Simplify right side
    90,330.80x = 4,224,880,304.73
  5. Step 5: Solve for x
    x = 4,224,880,304.73/90,330.80
  6. Step 6: Final answer
    x = 46,771.21

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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.