Home / 61,013.55-91,520.34-40,085.85

Finding the Fourth Proportional to 61,013.55, 91,520.34 and 40,085.85

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Solution

The fourth proportional to 61,013.55, 91,520.34 and 40,085.85 is: 60,128.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,013.55 : 91,520.34 = 40,085.85 : x
  2. Step 2: Convert to fraction form
    61,013.55/91,520.34 = 40,085.85/x
  3. Step 3: Cross multiply
    61,013.55x = 91,520.34 × 40,085.85
  4. Step 4: Simplify right side
    61,013.55x = 3,668,670,621.19
  5. Step 5: Solve for x
    x = 3,668,670,621.19/61,013.55
  6. Step 6: Final answer
    x = 60,128.78

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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.