Home / 81,435.11-122,168.75-39,344.45

Finding the Fourth Proportional to 81,435.11, 122,168.75 and 39,344.45

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Solution

The fourth proportional to 81,435.11, 122,168.75 and 39,344.45 is: 59,024.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,435.11 : 122,168.75 = 39,344.45 : x
  2. Step 2: Convert to fraction form
    81,435.11/122,168.75 = 39,344.45/x
  3. Step 3: Cross multiply
    81,435.11x = 122,168.75 × 39,344.45
  4. Step 4: Simplify right side
    81,435.11x = 4,806,661,468.37
  5. Step 5: Solve for x
    x = 4,806,661,468.37/81,435.11
  6. Step 6: Final answer
    x = 59,024.44

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1.5x scale

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.