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Finding the Fourth Proportional to 66,459.72, 91,713.06 and 36,651.72

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Solution

The fourth proportional to 66,459.72, 91,713.06 and 36,651.72 is: 50,578.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,459.72 : 91,713.06 = 36,651.72 : x
  2. Step 2: Convert to fraction form
    66,459.72/91,713.06 = 36,651.72/x
  3. Step 3: Cross multiply
    66,459.72x = 91,713.06 × 36,651.72
  4. Step 4: Simplify right side
    66,459.72x = 3,361,441,395.46
  5. Step 5: Solve for x
    x = 3,361,441,395.46/66,459.72
  6. Step 6: Final answer
    x = 50,578.63

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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.