Home / 81,292.40-121,951.25-48,036.43

Finding the Fourth Proportional to 81,292.40, 121,951.25 and 48,036.43

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Solution

The fourth proportional to 81,292.40, 121,951.25 and 48,036.43 is: 72,062.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,292.40 : 121,951.25 = 48,036.43 : x
  2. Step 2: Convert to fraction form
    81,292.40/121,951.25 = 48,036.43/x
  3. Step 3: Cross multiply
    81,292.40x = 121,951.25 × 48,036.43
  4. Step 4: Simplify right side
    81,292.40x = 5,858,102,684.04
  5. Step 5: Solve for x
    x = 5,858,102,684.04/81,292.40
  6. Step 6: Final answer
    x = 72,062.12

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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.