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Finding the Fourth Proportional to 66,110.58, 91,198.81 and 42,212.14

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Solution

The fourth proportional to 66,110.58, 91,198.81 and 42,212.14 is: 58,231.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,110.58 : 91,198.81 = 42,212.14 : x
  2. Step 2: Convert to fraction form
    66,110.58/91,198.81 = 42,212.14/x
  3. Step 3: Cross multiply
    66,110.58x = 91,198.81 × 42,212.14
  4. Step 4: Simplify right side
    66,110.58x = 3,849,696,760.32
  5. Step 5: Solve for x
    x = 3,849,696,760.32/66,110.58
  6. Step 6: Final answer
    x = 58,231.18

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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.