Home / 81,648.17-122,506.99-39,559.61

Finding the Fourth Proportional to 81,648.17, 122,506.99 and 39,559.61

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Solution

The fourth proportional to 81,648.17, 122,506.99 and 39,559.61 is: 59,356.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,648.17 : 122,506.99 = 39,559.61 : x
  2. Step 2: Convert to fraction form
    81,648.17/122,506.99 = 39,559.61/x
  3. Step 3: Cross multiply
    81,648.17x = 122,506.99 × 39,559.61
  4. Step 4: Simplify right side
    81,648.17x = 4,846,328,954.04
  5. Step 5: Solve for x
    x = 4,846,328,954.04/81,648.17
  6. Step 6: Final answer
    x = 59,356.25

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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.