Home / 81,021.54-111,809.52-45,211.17

Finding the Fourth Proportional to 81,021.54, 111,809.52 and 45,211.17

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Solution

The fourth proportional to 81,021.54, 111,809.52 and 45,211.17 is: 62,391.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,021.54 : 111,809.52 = 45,211.17 : x
  2. Step 2: Convert to fraction form
    81,021.54/111,809.52 = 45,211.17/x
  3. Step 3: Cross multiply
    81,021.54x = 111,809.52 × 45,211.17
  4. Step 4: Simplify right side
    81,021.54x = 5,055,039,216.34
  5. Step 5: Solve for x
    x = 5,055,039,216.34/81,021.54
  6. Step 6: Final answer
    x = 62,391.30

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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.