Home / 91,069.85-136,522.09-31,873.23

Finding the Fourth Proportional to 91,069.85, 136,522.09 and 31,873.23

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Solution

The fourth proportional to 91,069.85, 136,522.09 and 31,873.23 is: 47,780.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,069.85 : 136,522.09 = 31,873.23 : x
  2. Step 2: Convert to fraction form
    91,069.85/136,522.09 = 31,873.23/x
  3. Step 3: Cross multiply
    91,069.85x = 136,522.09 × 31,873.23
  4. Step 4: Simplify right side
    91,069.85x = 4,351,399,894.97
  5. Step 5: Solve for x
    x = 4,351,399,894.97/91,069.85
  6. Step 6: Final answer
    x = 47,780.90

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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.