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Finding the Fourth Proportional to 66,528.56, 91,809.42 and 45,344.84

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Solution

The fourth proportional to 66,528.56, 91,809.42 and 45,344.84 is: 62,575.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,528.56 : 91,809.42 = 45,344.84 : x
  2. Step 2: Convert to fraction form
    66,528.56/91,809.42 = 45,344.84/x
  3. Step 3: Cross multiply
    66,528.56x = 91,809.42 × 45,344.84
  4. Step 4: Simplify right side
    66,528.56x = 4,163,083,460.39
  5. Step 5: Solve for x
    x = 4,163,083,460.39/66,528.56
  6. Step 6: Final answer
    x = 62,575.88

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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.