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Finding the Fourth Proportional to 66,059.69, 91,162.13 and 39,224.25

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Solution

The fourth proportional to 66,059.69, 91,162.13 and 39,224.25 is: 54,129.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,059.69 : 91,162.13 = 39,224.25 : x
  2. Step 2: Convert to fraction form
    66,059.69/91,162.13 = 39,224.25/x
  3. Step 3: Cross multiply
    66,059.69x = 91,162.13 × 39,224.25
  4. Step 4: Simplify right side
    66,059.69x = 3,575,765,981.53
  5. Step 5: Solve for x
    x = 3,575,765,981.53/66,059.69
  6. Step 6: Final answer
    x = 54,129.32

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Double scale
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Similar ratio
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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.