Home / 81,512.85-122,269.28-46,520.85

Finding the Fourth Proportional to 81,512.85, 122,269.28 and 46,520.85

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Solution

The fourth proportional to 81,512.85, 122,269.28 and 46,520.85 is: 69,781.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,512.85 : 122,269.28 = 46,520.85 : x
  2. Step 2: Convert to fraction form
    81,512.85/122,269.28 = 46,520.85/x
  3. Step 3: Cross multiply
    81,512.85x = 122,269.28 × 46,520.85
  4. Step 4: Simplify right side
    81,512.85x = 5,688,070,601.88
  5. Step 5: Solve for x
    x = 5,688,070,601.88/81,512.85
  6. Step 6: Final answer
    x = 69,781.28

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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.