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Finding the Fourth Proportional to 66,674.88, 91,967.97 and 42,763.68

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Solution

The fourth proportional to 66,674.88, 91,967.97 and 42,763.68 is: 58,986.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,674.88 : 91,967.97 = 42,763.68 : x
  2. Step 2: Convert to fraction form
    66,674.88/91,967.97 = 42,763.68/x
  3. Step 3: Cross multiply
    66,674.88x = 91,967.97 × 42,763.68
  4. Step 4: Simplify right side
    66,674.88x = 3,932,888,839.33
  5. Step 5: Solve for x
    x = 3,932,888,839.33/66,674.88
  6. Step 6: Final answer
    x = 58,986.07

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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.