Home / 66,520.17-91,797.80-38,225.79

Finding the Fourth Proportional to 66,520.17, 91,797.80 and 38,225.79

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Solution

The fourth proportional to 66,520.17, 91,797.80 and 38,225.79 is: 52,751.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,520.17 : 91,797.80 = 38,225.79 : x
  2. Step 2: Convert to fraction form
    66,520.17/91,797.80 = 38,225.79/x
  3. Step 3: Cross multiply
    66,520.17x = 91,797.80 × 38,225.79
  4. Step 4: Simplify right side
    66,520.17x = 3,509,043,234.13
  5. Step 5: Solve for x
    x = 3,509,043,234.13/66,520.17
  6. Step 6: Final answer
    x = 52,751.57

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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.