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Finding the Fourth Proportional to 66,443.22, 91,713.86 and 39,594.15

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Solution

The fourth proportional to 66,443.22, 91,713.86 and 39,594.15 is: 54,653.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,443.22 : 91,713.86 = 39,594.15 : x
  2. Step 2: Convert to fraction form
    66,443.22/91,713.86 = 39,594.15/x
  3. Step 3: Cross multiply
    66,443.22x = 91,713.86 × 39,594.15
  4. Step 4: Simplify right side
    66,443.22x = 3,631,331,673.38
  5. Step 5: Solve for x
    x = 3,631,331,673.38/66,443.22
  6. Step 6: Final answer
    x = 54,653.16

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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.