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Finding the Fourth Proportional to 66,115.58, 91,239 and 35,900.32

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Solution

The fourth proportional to 66,115.58, 91,239 and 35,900.32 is: 49,542.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,115.58 : 91,239 = 35,900.32 : x
  2. Step 2: Convert to fraction form
    66,115.58/91,239 = 35,900.32/x
  3. Step 3: Cross multiply
    66,115.58x = 91,239 × 35,900.32
  4. Step 4: Simplify right side
    66,115.58x = 3,275,509,296.48
  5. Step 5: Solve for x
    x = 3,275,509,296.48/66,115.58
  6. Step 6: Final answer
    x = 49,542.17

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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.