Home / 66,110.53-91,223.34-38,887.85

Finding the Fourth Proportional to 66,110.53, 91,223.34 and 38,887.85

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Solution

The fourth proportional to 66,110.53, 91,223.34 and 38,887.85 is: 53,659.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,110.53 : 91,223.34 = 38,887.85 : x
  2. Step 2: Convert to fraction form
    66,110.53/91,223.34 = 38,887.85/x
  3. Step 3: Cross multiply
    66,110.53x = 91,223.34 × 38,887.85
  4. Step 4: Simplify right side
    66,110.53x = 3,547,479,562.42
  5. Step 5: Solve for x
    x = 3,547,479,562.42/66,110.53
  6. Step 6: Final answer
    x = 53,659.83

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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.