Home / 81,823.55-122,734.08-36,813.12

Finding the Fourth Proportional to 81,823.55, 122,734.08 and 36,813.12

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Solution

The fourth proportional to 81,823.55, 122,734.08 and 36,813.12 is: 55,219.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,823.55 : 122,734.08 = 36,813.12 : x
  2. Step 2: Convert to fraction form
    81,823.55/122,734.08 = 36,813.12/x
  3. Step 3: Cross multiply
    81,823.55x = 122,734.08 × 36,813.12
  4. Step 4: Simplify right side
    81,823.55x = 4,518,223,893.49
  5. Step 5: Solve for x
    x = 4,518,223,893.49/81,823.55
  6. Step 6: Final answer
    x = 55,219.12

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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.