Home / 66,355.53-91,570.15-36,140.75

Finding the Fourth Proportional to 66,355.53, 91,570.15 and 36,140.75

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Solution

The fourth proportional to 66,355.53, 91,570.15 and 36,140.75 is: 49,873.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,355.53 : 91,570.15 = 36,140.75 : x
  2. Step 2: Convert to fraction form
    66,355.53/91,570.15 = 36,140.75/x
  3. Step 3: Cross multiply
    66,355.53x = 91,570.15 × 36,140.75
  4. Step 4: Simplify right side
    66,355.53x = 3,309,413,898.61
  5. Step 5: Solve for x
    x = 3,309,413,898.61/66,355.53
  6. Step 6: Final answer
    x = 49,873.98

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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.