Home / 66,170.76-91,363.32-40,711.38

Finding the Fourth Proportional to 66,170.76, 91,363.32 and 40,711.38

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Solution

The fourth proportional to 66,170.76, 91,363.32 and 40,711.38 is: 56,211.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,170.76 : 91,363.32 = 40,711.38 : x
  2. Step 2: Convert to fraction form
    66,170.76/91,363.32 = 40,711.38/x
  3. Step 3: Cross multiply
    66,170.76x = 91,363.32 × 40,711.38
  4. Step 4: Simplify right side
    66,170.76x = 3,719,526,838.58
  5. Step 5: Solve for x
    x = 3,719,526,838.58/66,170.76
  6. Step 6: Final answer
    x = 56,211.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.