Home / 72,836,694-109,240,867.40-21,017,653.56

Finding the Fourth Proportional to 72,836,694, 109,240,867.40 and 21,017,653.56

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Solution

The fourth proportional to 72,836,694, 109,240,867.40 and 21,017,653.56 is: 31,522,390.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,836,694 : 109,240,867.40 = 21,017,653.56 : x
  2. Step 2: Convert to fraction form
    72,836,694/109,240,867.40 = 21,017,653.56/x
  3. Step 3: Cross multiply
    72,836,694x = 109,240,867.40 × 21,017,653.56
  4. Step 4: Simplify right side
    72,836,694x = 2,295,986,705,607,098
  5. Step 5: Solve for x
    x = 2,295,986,705,607,098/72,836,694
  6. Step 6: Final answer
    x = 31,522,390.43

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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.