Home / 81,262.49-112,142.53-45,450.21

Finding the Fourth Proportional to 81,262.49, 112,142.53 and 45,450.21

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Solution

The fourth proportional to 81,262.49, 112,142.53 and 45,450.21 is: 62,721.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,262.49 : 112,142.53 = 45,450.21 : x
  2. Step 2: Convert to fraction form
    81,262.49/112,142.53 = 45,450.21/x
  3. Step 3: Cross multiply
    81,262.49x = 112,142.53 × 45,450.21
  4. Step 4: Simplify right side
    81,262.49x = 5,096,901,760.12
  5. Step 5: Solve for x
    x = 5,096,901,760.12/81,262.49
  6. Step 6: Final answer
    x = 62,721.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.