Home / 66,150.55-91,285.14-39,292.35

Finding the Fourth Proportional to 66,150.55, 91,285.14 and 39,292.35

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Solution

The fourth proportional to 66,150.55, 91,285.14 and 39,292.35 is: 54,221.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,150.55 : 91,285.14 = 39,292.35 : x
  2. Step 2: Convert to fraction form
    66,150.55/91,285.14 = 39,292.35/x
  3. Step 3: Cross multiply
    66,150.55x = 91,285.14 × 39,292.35
  4. Step 4: Simplify right side
    66,150.55x = 3,586,807,214.25
  5. Step 5: Solve for x
    x = 3,586,807,214.25/66,150.55
  6. Step 6: Final answer
    x = 54,221.88

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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.