Home / 81,890.85-122,834.90-36,887.18

Finding the Fourth Proportional to 81,890.85, 122,834.90 and 36,887.18

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Solution

The fourth proportional to 81,890.85, 122,834.90 and 36,887.18 is: 55,330.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,890.85 : 122,834.90 = 36,887.18 : x
  2. Step 2: Convert to fraction form
    81,890.85/122,834.90 = 36,887.18/x
  3. Step 3: Cross multiply
    81,890.85x = 122,834.90 × 36,887.18
  4. Step 4: Simplify right side
    81,890.85x = 4,531,032,267.97
  5. Step 5: Solve for x
    x = 4,531,032,267.97/81,890.85
  6. Step 6: Final answer
    x = 55,330.14

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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.