Home / 66,407.06-91,639.41-36,191.78

Finding the Fourth Proportional to 66,407.06, 91,639.41 and 36,191.78

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Solution

The fourth proportional to 66,407.06, 91,639.41 and 36,191.78 is: 49,943.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,407.06 : 91,639.41 = 36,191.78 : x
  2. Step 2: Convert to fraction form
    66,407.06/91,639.41 = 36,191.78/x
  3. Step 3: Cross multiply
    66,407.06x = 91,639.41 × 36,191.78
  4. Step 4: Simplify right side
    66,407.06x = 3,316,592,907.85
  5. Step 5: Solve for x
    x = 3,316,592,907.85/66,407.06
  6. Step 6: Final answer
    x = 49,943.38

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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.