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Finding the Fourth Proportional to 66,528.60, 91,811.16 and 36,314.52

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Solution

The fourth proportional to 66,528.60, 91,811.16 and 36,314.52 is: 50,114.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,528.60 : 91,811.16 = 36,314.52 : x
  2. Step 2: Convert to fraction form
    66,528.60/91,811.16 = 36,314.52/x
  3. Step 3: Cross multiply
    66,528.60x = 91,811.16 × 36,314.52
  4. Step 4: Simplify right side
    66,528.60x = 3,334,078,206.04
  5. Step 5: Solve for x
    x = 3,334,078,206.04/66,528.60
  6. Step 6: Final answer
    x = 50,114.96

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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.