Home / 81,418.53-122,206.50-39,328.11

Finding the Fourth Proportional to 81,418.53, 122,206.50 and 39,328.11

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Solution

The fourth proportional to 81,418.53, 122,206.50 and 39,328.11 is: 59,030.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,418.53 : 122,206.50 = 39,328.11 : x
  2. Step 2: Convert to fraction form
    81,418.53/122,206.50 = 39,328.11/x
  3. Step 3: Cross multiply
    81,418.53x = 122,206.50 × 39,328.11
  4. Step 4: Simplify right side
    81,418.53x = 4,806,150,674.72
  5. Step 5: Solve for x
    x = 4,806,150,674.72/81,418.53
  6. Step 6: Final answer
    x = 59,030.18

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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.