Home / 81,798,661.28-122,571,863.28-40,251,842.72

Finding the Fourth Proportional to 81,798,661.28, 122,571,863.28 and 40,251,842.72

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Solution

The fourth proportional to 81,798,661.28, 122,571,863.28 and 40,251,842.72 is: 60,315,698.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,798,661.28 : 122,571,863.28 = 40,251,842.72 : x
  2. Step 2: Convert to fraction form
    81,798,661.28/122,571,863.28 = 40,251,842.72/x
  3. Step 3: Cross multiply
    81,798,661.28x = 122,571,863.28 × 40,251,842.72
  4. Step 4: Simplify right side
    81,798,661.28x = 4,933,743,362,643,903
  5. Step 5: Solve for x
    x = 4,933,743,362,643,903/81,798,661.28
  6. Step 6: Final answer
    x = 60,315,698.15

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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.