Home / 81,388.28-122,065.98-56,653.31

Finding the Fourth Proportional to 81,388.28, 122,065.98 and 56,653.31

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Solution

The fourth proportional to 81,388.28, 122,065.98 and 56,653.31 is: 84,968.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,388.28 : 122,065.98 = 56,653.31 : x
  2. Step 2: Convert to fraction form
    81,388.28/122,065.98 = 56,653.31/x
  3. Step 3: Cross multiply
    81,388.28x = 122,065.98 × 56,653.31
  4. Step 4: Simplify right side
    81,388.28x = 6,915,441,805.39
  5. Step 5: Solve for x
    x = 6,915,441,805.39/81,388.28
  6. Step 6: Final answer
    x = 84,968.52

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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.