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Finding the Fourth Proportional to 66,029.88, 91,120.70 and 35,815.13

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Solution

The fourth proportional to 66,029.88, 91,120.70 and 35,815.13 is: 49,424.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,029.88 : 91,120.70 = 35,815.13 : x
  2. Step 2: Convert to fraction form
    66,029.88/91,120.70 = 35,815.13/x
  3. Step 3: Cross multiply
    66,029.88x = 91,120.70 × 35,815.13
  4. Step 4: Simplify right side
    66,029.88x = 3,263,499,350.13
  5. Step 5: Solve for x
    x = 3,263,499,350.13/66,029.88
  6. Step 6: Final answer
    x = 49,424.58

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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.