Home / 81,496.38-122,220.85-31,565.35

Finding the Fourth Proportional to 81,496.38, 122,220.85 and 31,565.35

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Solution

The fourth proportional to 81,496.38, 122,220.85 and 31,565.35 is: 47,338.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,496.38 : 122,220.85 = 31,565.35 : x
  2. Step 2: Convert to fraction form
    81,496.38/122,220.85 = 31,565.35/x
  3. Step 3: Cross multiply
    81,496.38x = 122,220.85 × 31,565.35
  4. Step 4: Simplify right side
    81,496.38x = 3,857,943,907.55
  5. Step 5: Solve for x
    x = 3,857,943,907.55/81,496.38
  6. Step 6: Final answer
    x = 47,338.84

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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.