Home / 66,219.12-91,378.56-36,004.20

Finding the Fourth Proportional to 66,219.12, 91,378.56 and 36,004.20

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Solution

The fourth proportional to 66,219.12, 91,378.56 and 36,004.20 is: 49,683.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,219.12 : 91,378.56 = 36,004.20 : x
  2. Step 2: Convert to fraction form
    66,219.12/91,378.56 = 36,004.20/x
  3. Step 3: Cross multiply
    66,219.12x = 91,378.56 × 36,004.20
  4. Step 4: Simplify right side
    66,219.12x = 3,290,011,949.95
  5. Step 5: Solve for x
    x = 3,290,011,949.95/66,219.12
  6. Step 6: Final answer
    x = 49,683.72

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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.