Home / 66,146.05-91,278.93-39,287.85

Finding the Fourth Proportional to 66,146.05, 91,278.93 and 39,287.85

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Solution

The fourth proportional to 66,146.05, 91,278.93 and 39,287.85 is: 54,215.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,146.05 : 91,278.93 = 39,287.85 : x
  2. Step 2: Convert to fraction form
    66,146.05/91,278.93 = 39,287.85/x
  3. Step 3: Cross multiply
    66,146.05x = 91,278.93 × 39,287.85
  4. Step 4: Simplify right side
    66,146.05x = 3,586,152,910.00
  5. Step 5: Solve for x
    x = 3,586,152,910.00/66,146.05
  6. Step 6: Final answer
    x = 54,215.68

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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.