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Finding the Fourth Proportional to 66,549.62, 91,805.33 and 39,673.19

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Solution

The fourth proportional to 66,549.62, 91,805.33 and 39,673.19 is: 54,729.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,549.62 : 91,805.33 = 39,673.19 : x
  2. Step 2: Convert to fraction form
    66,549.62/91,805.33 = 39,673.19/x
  3. Step 3: Cross multiply
    66,549.62x = 91,805.33 × 39,673.19
  4. Step 4: Simplify right side
    66,549.62x = 3,642,209,642.71
  5. Step 5: Solve for x
    x = 3,642,209,642.71/66,549.62
  6. Step 6: Final answer
    x = 54,729.24

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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.